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2. Simultaneous pelvic exenteration and liver resection for primary rectal cancer with synchronous liver metastases: results from the PelvEx Collaborative

Author

Kelly, M. E., Aalbers, A. G. J., Abdul Aziz, N., Abecasis, N., Abraham‐Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Burger, J. W. A., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo‐Marulanda, A., Chan, K. K. L., Chang, G. J., Chew, M. H., Chong, P. C., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique‐Navascues, J. M., Espin‐Basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia‐Granero, E., Garcia‐Sabrido, J. L., Gentilini, L., George, M. L., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Hagemans, J. A. W., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kristensen, H. Ø., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Margues, C. F. S., Martling, A., Meijerink, W. J. H. J., Merkel, S., Mehta, A. M., McArthur, D. R., McDermott, F. D., McGrath, J. S., Malde, S., Mirnezami, A., Monson, J. R. T., Morton, J. R., Mullaney, T. G., Negoi, I., Neto, J. W. M., Nguyen, B., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O’Connell, P. R., O’Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., van Ramshorst, G. H., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Rutten, H. J. T., Ryan, É. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Hellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Sumrien, H., Sutton, P. A., Swartking, T., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., Vasquez‐Jimenez, W., Verhoef, C., Vizzielli, G., Voogt, E. L. K., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Wheeler, J. M. D., Wild, J., Wilson, M., de Wilt, J. H. W., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., van Zoggel, D., Winter, D. C., Kelly, M. E., Aalbers, A. G. J., Abdul Aziz, N., Abecasis, N., Abraham‐nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Burger, J. W. A., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo‐marulanda, A., Chan, K. K. L., Chang, G. J., Chew, M. H., Chong, P. C., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique‐navascues, J. M., Espin‐basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia‐granero, E., Garcia‐sabrido, J. L., Gentilini, L., George, M. L., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Hagemans, J. A. W., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kristensen, H. Ø., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Margues, C. F. S., Martling, A., Meijerink, W. J. H. J., Merkel, S., Mehta, A. M., Mcarthur, D. R., Mcdermott, F. D., Mcgrath, J. S., Malde, S., Mirnezami, A., Monson, J. R. T., Morton, J. R., Mullaney, T. G., Negoi, I., Neto, J. W. M., Nguyen, B., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., O’Connell, P. R., O’Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., van Ramshorst, G. H., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Rutten, H. J. T., Ryan, É. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Hellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Sumrien, H., Sutton, P. A., Swartking, T., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., Vasquez‐jimenez, W., Verhoef, C., Vizzielli, G., Voogt, E. L. K., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Wheeler, J. M. D., Wild, J., Wilson, M., de Wilt, J. H. W., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., van Zoggel, D., Winter, D. C., Kelly, ME, Aalbers, AGJ, Aziz, NA, Abecasis, N, Abraham-Nordling, M, Akiyoshi, T, Alberda, W, Albert, M, Andric, M, Angenete, E, Antoniou, A, Auer, R, Austin, KK, Aziz, O, Baker, RP, Bali, M, Baseckas, G, Bebington, B, Bednarski, BK, Beets, GL, Berg, PL, Beynon, J, Biondo, S, Boyle, K, Bordeianou, L, Bremers, AB, Brunner, M, Buchwald, P, Bui, A, Burgess, A, Burger, JWA, Burling, D, Burns, E, Campain, N, Carvalhal, S, Castro, L, Caycedo-Marulanda, A, Chan, KKL, Chew, GJH, Chong, PC, Christensen, HK, Clouston, H, Codd, M, Coffins, D, Colquhoun, AJ, Corr, A, Coscia, M, Coyne, PE, Creavin, B, Croner, RS, Damjanovic, L, Daniels, R, Davies, M, Davies, RJ, Delaney, CP, Denost, Q, Deutsch, C, Dietz, D, Domingo, S, Dozois, EJ, Duff, M, Eglinton, T, Enrique-Navascues, JM, Espin-Basany, E, Evans, MD, Fearnhead, NS, Flatmark, K, Fleming, F, Frizelle, FA, Gallego, MA, Garcia-Granero, E, Garcia-Sabrido, JL, Gentilini, L, George, ML, Ghouti, L, Giner, F, Ginther, N, Glynn, R, Golda, T, Griffiths, B, Harris, DA, Hagemans, JAW, Hanchanale, V, Harji, DP, Helewa, RM, Heriot, AG, Hochman, D, Hohenberger, W, Holm, T, Hompes, R, Jenkins, JT, Kaffenberger, S, Kandaswamy, GV, Kapur, S, Kanemitsu, Y, Kelley, SR, Keller, DS, Khan, MS, Kiran, RP, Kim, H, Kim, HJ, Koh, CE, Kok, NFM, Kokelaar, R, Kontovounisios, C, Kristensen, HO, Kroon, HM, Kusters, M, Lago, V, Larsen, SG, Larson, DW, Law, WL, Laurberg, S, Lee, PJ, Limbert, M, Lydrup, ML, Lyons, A, Lynch, AC, Mantyh, C, Mathis, KL, Margues, CFS, Martling, A, Meijerink, WJHJ, Merkel, S, Mehta, AM, McArthur, DR, McDermott, FD, McGrath, JS, Malde, S, Mimezami, A, Monson, JRT, Morton, JR, Mullaney, TG, Negoi, I, Neto, JWM, Nguyen, B, Nielsen, MB, Nieuwenhuijzen, GAP, Nilsson, PJ, O'Connell, PR, O'Dwyer, ST, Palmer, G, Pappou, E, Park, J, Patsouras, D, Pellino, G, Peterson, AC, Poggioli, G, Proud, D, Quinn, M, Quyn, A, Radwan, RW, van Ramshorst, GH, Rasheed, S, Rasmussen, PC, Regenbogen, SE, Renehan, A, Rocha, R, Rochester, M, Rohila, J, Rothbarth, J, Rottoli, M, Roxburgh, C, Rutten, HJT, Ryan, EJ, Safar, B, Sagar, PM, Sahai, A, Saklani, A, Sammour, T, Sayyed, R, Schizas, AMP, Schwarzkopf, E, Scripcariu, V, Selvasekar, C, Shaikh, I, Hellawell, G, Shida, D, Simpson, A, Smart, NJ, Smart, P, Smith, JJ, Solbakken, AM, Solomon, MJ, Sorensen, MM, Steele, SR, Steffens, D, Stitzenberg, K, Stocchi, L, Stylianides, NA, Sumrien, H, Sutton, PA, Swanking, T, Taylor, C, Tekkis, PP, Teras, J, Thurairaja, R, Toh, EL, Tsarkov, P, Tsukada, Y, Tsukamoto, S, Tuech, JJ, Turner, WH, Tuynman, JB, Vasquez-Jimenez, W, Verhoef, C, Vizzielli, G, Voogt, ELK, Uehara, K, Wakeman, C, Warner, S, Wasmuth, HH, Weber, K, Weiser, MR, Wheeler, JMD, Wild, J, Wilson, M, de Wilt, JHW, Wolthuis, A, Yano, H, Yip, B, Yip, J, Yoo, RN, van Zoggel, D, Winter, DC, Surgery, CCA - Cancer Treatment and quality of life, and Amsterdam Gastroenterology Endocrinology Metabolism

Subjects
Male, medicine.medical_specialty, Adolescent, Colorectal cancer, survival outcomes, medicine.medical_treatment, surgical outcome, surgical outcomes, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], 03 medical and health sciences, 0302 clinical medicine, SDG 3 - Good Health and Well-being, Interquartile range, medicine, Humans, liver metastasi, Rectal cancer, Retrospective Studies, Pelvic exenteration, business.industry, Rectal Neoplasms, Mortality rate, Liver Neoplasms, Gastroenterology, Postoperative complication, Perioperative, medicine.disease, Surgery, Pelvic Exenteration, liver metastasis, Treatment Outcome, 030220 oncology & carcinogenesis, international collaboration, Resection margin, 030211 gastroenterology & hepatology, Hepatectomy, Neoplasm Recurrence, Local, business
Abstract

Aim: At presentation, 15–20% of patients with rectal cancer already have synchronous liver metastases. The aim of this study was to determine the surgical and survival outcomes in patients with advanced rectal cancer who underwent combined pelvic exenteration and liver (oligometastatic) resection. Method: Data from 20 international institutions that performed simultaneous pelvic exenteration and liver resection between 2007 and 2017 were accumulated. Primarily, we examined perioperative outcomes, morbidity and mortality. We also assessed the impact that margin status had on survival. Results: Of 128 patients, 72 (56.2%) were men with a median age of 60 years [interquartile range (IQR) 15 years]. The median size of the liver oligometastatic deposits was 2 cm (IQR 1.8 cm). The median duration of surgery was 406 min (IQR 240 min), with a median blood loss of 1090 ml (IQR 2010 ml). A negative resection margin (R0 resection) was achieved in 73.5% of pelvic exenterations and 66.4% of liver resections. The 30-day mortality rate was 1.6%, and 32% of patients had a major postoperative complication. The 5-year overall survival for patients in whom an R0 resection of both primary and metastatic disease was achieved was 54.6% compared with 20% for those with an R1/R2 resection (P = 0.006). Conclusion: Simultaneous pelvic exenteration and liver resection is feasible, with acceptable morbidity and mortality. Simultaneous resection should only be performed where an R0 resection of both pelvic and hepatic disease is anticipated.

Published
2020
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3. Management strategies for patients with advanced rectal cancer and liver metastases using modified Delphi methodology: results from the PelvEx Collaborative

Author

Kelly M. E., Agj A., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Akiyoshi T., Alberda W., Albert M., Andric M., Angenete E., Antoniou A., Auer R., Austin K. K., Aziz O., Baker R. P., Bali M., Baseckas G., Bebington B., Bednarski B. K., Beets G. L., Berg P. L., Beynon J., Biondo S., Boyle K., Bordeianou L., Bremers A. B., Brunner M., Buchwald P., Bui A., Burgess A., Jwa B., Burling D., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Kkl C., Chang G. J., Chew M. H., Chong P., Christensen H. K., Clouston H., Codd M., Collins D., Colquhoun A. J., Corr A., Coscia M., Coyne P. E., Creavin B., Croner R. S., Damjanovic L., Daniels I. R., Davies M., Davies R. J., Delaney C. P., de Wilt J., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E. J., Duff M., Eglinton T., Enrique-Navascues J. M., Espin-Basany E., Evans M. D., Fearnhead N. S., Flatmark K., Fleming F., Frizelle F. A., Gallego M. A., Garcia-Granero E., Garcia-Sabrido J. L., Gentilini L., George M. L., Ghouti L., Giner F., Ginther N., Glynn R., Golda T., Griffiths B., Harris D. A., Jaw H., Hanchanale V., Harji D. P., Helewa R. M., Heriot A. G., Hochman D., Hohenberger W., Holm T., Hompes R., Jenkins J. T., Kaffenberger S., Kandaswamy G. V., Kapur S., Kanemitsu Y., Kelley S. R., Keller D. S., Khan M. S., Kiran R. P., Kim H., Kim H. J., Koh C. E., Nfm K., Kokelaar R., Kontovounisios C., Kristensen H. O., Kroon H. M., Kusters M., Lago V., Larsen S. G., Larson D. W., Law W. L., Laurberg S., Lee P. J., Limbert M., Lydrup M. L., Lyons A., Lynch A. C., Mantyh C., Mathis K. L., Cfs M., Martling A., Wjhj M., Merkel S., Mehta A. M., McArthur D. R., McDermott F. D., McGrath J. S., Malde S., Mirnezami A., Jrt M., Morton J. R., Mullaney T. G., Negoi I., Jwm N., Nguyen B., Nielsen M. B., Gap N., Nilsson P. J., O'Connell P. R., O'Dwyer S. T., Palmer G., Pappou E., Park J., Patsouras D., Pellino G., Peterson A. C., Poggioli G., Proud D., Quinn M., Quyn A., Radwan R. W., Rasheed S., Rasmussen P. C., Regenbogen S. E., Renehan A., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Hjt R., Ryan E. J., Safar B., Sagar P. M., Sahai A., Saklani A., Sammour T., Sayyed R., Amp S., Schwarzkopf E., Scripcariu V., Selvasekar C., Shaikh I., Shellawell G., Shida D., Simpson A., Smart N. J., Smart P., Smith J. J., Solbakken A. M., Solomon M. J., Sorensen M. M., Steele S. R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N. A., Sumrien H., Sutton P. A., Swartking T., Taylor C., Tekkis P. P., Teras J., Thurairaja R., Toh E. L., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J. J., Turner W. H., Tuynman J. B., van Ramshorst G., van Zoggel D., Vasquez-Jimenez W., Verhoef C., Vizzielli G., Elk V., Uehara K., Wakeman C., Warrier S., Wasmuth H. H., Weber K., Weiser M. R., Jmd W., Wild J., Wilson M., Wolthuis A., Yano H., Yip B., Yip J., Yoo R. N., Winter D. C., Rottoli M, Poggioli G, Kelly, M. E., Agj, A., Abdul Aziz, N., Abecasis, N., Abraham-Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Jwa, B., Burling, D., Campain, N., Carvalhal, S., Castro, L., Caycedo-Marulanda, A., Kkl, C., Chang, G. J., Chew, M. H., Chong, P., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., de Wilt, J., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique-Navascues, J. M., Espin-Basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Jaw, H., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Nfm, K., Kokelaar, R., Kontovounisios, C., Kristensen, H. O., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Cfs, M., Martling, A., Wjhj, M., Merkel, S., Mehta, A. M., Mcarthur, D. R., Mcdermott, F. D., Mcgrath, J. S., Malde, S., Mirnezami, A., Jrt, M., Morton, J. R., Mullaney, T. G., Negoi, I., Jwm, N., Nguyen, B., Nielsen, M. B., Gap, N., Nilsson, P. J., O'Connell, P. R., O'Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Hjt, R., Ryan, E. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Amp, S., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Shellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sorensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Sumrien, H., Sutton, P. A., Swartking, T., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., van Ramshorst, G., van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Vizzielli, G., Elk, V., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Jmd, W., Wild, J., Wilson, M., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., Winter, D. C., and Academic Medical Center

Subjects
Liver metastasisSurvival Outcome, medicine.medical_specialty, survival outcomes, Colorectal cancer, surgical outcome, medicine.medical_treatment, Delphi method, Rectum, Disease, surgical outcomes, 03 medical and health sciences, Liver disease, 0302 clinical medicine, SDG 3 - Good Health and Well-being, Hepatectomy, Humans, Medicine, liver metastasi, Rectal cancer, Neoplasm Staging, Pelvic exenteration, Rectal Neoplasms, business.industry, General surgery, Liver Neoplasms, Gastroenterology, Induction chemotherapy, medicine.disease, liver metastasis, medicine.anatomical_structure, 030220 oncology & carcinogenesis, international collaboration, 030211 gastroenterology & hepatology, business
Abstract

Aim: A total of 15–20% of patients with rectal cancer have liver metastases on presentation. The management of these patients is controversial. Heterogeneity in management strategies is considerable, with management often being dependent on local resources and available expertise. Method: Members of the PelvEx Collaborative were invited to participate in the generation of a consensus statement on the optimal management of patients with advanced rectal cancer with liver involvement. Fifteen statements were created for topical discussion on diagnostic and management issues. Panellists were asked to vote on statements and anonymous feedback was given. A collaborative meeting was used to discuss any nuances and clarify any obscurity. Consensus was considered when > 85% agreement on a statement was achieved. Results: A total of 135 participants were involved in the final round of the Delphi questionnaire. Nine of the 15 statements reached consensus regarding the management of patients with advanced rectal cancer and oligometastatic liver disease. Routine use of liver MRI was not recommended for patients with locally advanced rectal cancer, unless there was concern for metastatic disease on initial computed tomography staging scan. Induction chemotherapy was advocated as first-line treatment in those with synchronous liver metastases in locally advanced rectal cancer. In the presence of symptomatic primary disease, a diverting stoma may be required to facilitate induction chemotherapy. Overall, only one-quarter of the panellists would consider simultaneous pelvic exenteration and liver resection. Conclusion: This Delphi process highlights the diverse treatment of advanced rectal cancer with liver metastases and provides recommendations from an experienced international group regarding the multidisciplinary management approach.

Published
2020
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5. Perioperative management and anaesthetic considerations in pelvic exenterations using Delphi methodology: results from the PelvEx Collaborative

Author

PelvEx Collaborative, [missing], Chok, A Y, Oliver, A, Rasheed, S, Tan, E J, Kelly, M E, Aalbers, A G J, Abdul Aziz, N, Abecasis, N, Abraham-Nordling, M, Akiyoshi, T, Alberda, W, Albert, M, Andric, M, Angenete, E, Antoniou, A, Auer, R, Austin, K K, Aziz, O, Baker, R P, Bali, M, Baseckas, G, Bebington, B, Bedford, M, Bednarski, B K, Beets, G L, Berg, P L, Beynon, J, Biondo, S, Boyle, K, Bordeianou, L, Bremers, A B, Brunner, M, Buchwald, P, Bui, A, Burgess, A, Burger, J W A, Burling, D, Burns, E, Campain, N, Carvalhal, S, Castro, L, Caycedo-Marulanda, A, Chan, K K L, Chang, G J, Chew, M H, Chong, P, Christensen, H K, Clouston, H, Codd, M, Collins, D, Colquhoun, A J, Corr, A, Coscia, M, Coyne, P E, Creavin, B, Croner, R S, Damjanovic, L, Daniels, I R, Davies, M, Davies, R J, Delaney, C P, de Wilt, J H W, Denost, Q, Deutsch, C, Dietz, D, Domingo, S, Dozois, E J, Duff, M, Eglinton, T, Enrique-Navascues, J M, Espin-Basany, E, Evans, M D, Fearnhead, N S, Flatmark, K, Fleming, F, Frizelle, F A, Gallego, M A, Garcia-Granero, E, Garcia-Sabrido, J L, Gentilini, L, George, M L, George, V, Ghouti, L, Giner, F, Ginther, N, Glynn, R, Golda, T, Griffiths, B, Harris, D A, Hagemans, J A W, Hanchanale, V, Harji, D P, Helewa, R M, Hellawell, G, Heriot, A G, Hochman, D, Hohenberger, W, Holm, T, Holmström, A, Hompes, R, Jenkins, J T, Kaffenberger, S, Kandaswamy, G V, Kapur, S, Kanemitsu, Y, Kelley, S R, Keller, D S, Khan, M S, Kim, H, Kim, H J, Koh, C E, Kok, N F M, Kokelaar, R, Kontovounisios, C, Kristensen, H Ø, Kroon, H M, Kusters, M, Lago, V, Larsen, S G, Larson, D W, Law, W L, Laurberg, S, Lee, P J, Limbert, M, Lydrup, M L, Lyons, A, Lynch, A C, Mantyh, C, Mathis, K L, Margues, C F S, Martling, A, Meijerink, W J H J, Merkel, S, Mehta, A M, McArthur, D R, McDermott, F D, McGrath, J S, Malde, S, Mirnezami, A, Monson, J R T, Morton, J R, Mullaney, T G, Negoi, I, Neto, J W M, Nguyen, B, Nielsen, M B, Nieuwenhuijzen, G A P, Nilsson, P J, O’Dwyer, S T, Palmer, G, Pappou, E, Park, J, Patsouras, D, Pellino, G, Peterson, A C, Poggioli, G, Proud, D, Quinn, M, Quyn, A, Radwan, R W, Rasmussen, P C, Rausa, E, Regenbogen, S E, Renehan, A, Rocha, R, Rochester, M, Rohila, J, Rothbarth, J, Rottoli, M, Roxburgh, C, Rutten, H J T, Ryan, É J, Safar, B, Sagar, P M, Sahai, A, Saklani, A, Sammour, T, Sayyed, R, Schizas, A M P, Schwarzkopf, E, Scripcariu, V, Selvasekar, C, Shaikh, I, Shida, D, Simpson, A, Smart, N J, Smart, P, Smith, J J, Solbakken, A M, Solomon, M J, Sørensen, M M, Steele, S R, Steffens, D, Stitzenberg, K, Stocchi, L, Stylianides, N A, Swartling, T, Sumrien, H, Sutton, P A, Swartking, T, Taylor, C, Teras, J, Thurairaja, R, Toh, E L, Tsarkov, P, Tsukada, Y, Tsukamoto, S, Tuech, J J, Turner, W H, Tuynman, J B, van Ramshorst, Gabriëlle, Zoggel, D van, Vasquez-Jimenez, W, Verhoef, C, Vizzielli, G, Voogt, E L K, Uehara, K, Wakeman, C, Warrier, S, Wasmuth, H H, Weber, K, Weiser, M R, Wheeler, J M D, Wild, J, Wilson, M, Wolthuis, A, Yano, H, Yip, B, Yip, J, Yoo, R N, Winter, D C, Tekkis, P P, Surgery, Chok, A Y, Oliver, A, Rasheed, S, Tan, E J, Kelly, M E, Aalbers, A G J, Abdul Aziz, N, Abecasis, N, Abraham-Nordling, M, Akiyoshi, T, Alberda, W, Albert, M, Andric, M, Angenete, E, Antoniou, A, Auer, R, Austin, K K, Aziz, O, Baker, R P, Bali, M, Baseckas, G, Bebington, B, Bedford, M, Bednarski, B K, Beets, G L, Berg, P L, Beynon, J, Biondo, S, Boyle, K, Bordeianou, L, Bremers, A B, Brunner, M, Buchwald, P, Bui, A, Burgess, A, Burger, J W A, Burling, D, Burns, E, Campain, N, Carvalhal, S, Castro, L, Caycedo-Marulanda, A, Chan, K K L, Chang, G J, Chew, M H, Chong, P, Christensen, H K, Clouston, H, Codd, M, Collins, D, Colquhoun, A J, Corr, A, Coscia, M, Coyne, P E, Creavin, B, Croner, R S, Damjanovic, L, Daniels, I R, Davies, M, Davies, R J, Delaney, C P, de Wilt, J H W, Denost, Q, Deutsch, C, Dietz, D, Domingo, S, Dozois, E J, Duff, M, Eglinton, T, Enrique-Navascues, J M, Espin-Basany, E, Evans, M D, Fearnhead, N S, Flatmark, K, Fleming, F, Frizelle, F A, Gallego, M A, Garcia-Granero, E, Garcia-Sabrido, J L, Gentilini, L, George, M L, George, V, Ghouti, L, Giner, F, Ginther, N, Glynn, R, Golda, T, Griffiths, B, Harris, D A, Hagemans, J A W, Hanchanale, V, Harji, D P, Helewa, R M, Hellawell, G, Heriot, A G, Hochman, D, Hohenberger, W, Holm, T, Holmström, A, Hompes, R, Jenkins, J T, Kaffenberger, S, Kandaswamy, G V, Kapur, S, Kanemitsu, Y, Kelley, S R, Keller, D S, Khan, M S, Kim, H, Kim, H J, Koh, C E, Kok, N F M, Kokelaar, R, Kontovounisios, C, Kristensen, H Ø, Kroon, H M, Kusters, M, Lago, V, Larsen, S G, Larson, D W, Law, W L, Laurberg, S, Lee, P J, Limbert, M, Lydrup, M L, Lyons, A, Lynch, A C, Mantyh, C, Mathis, K L, Margues, C F S, Martling, A, Meijerink, W J H J, Merkel, S, Mehta, A M, McArthur, D R, McDermott, F D, McGrath, J S, Malde, S, Mirnezami, A, Monson, J R T, Morton, J R, Mullaney, T G, Negoi, I, Neto, J W M, Nguyen, B, Nielsen, M B, Nieuwenhuijzen, G A P, Nilsson, P J, O’Dwyer, S T, Palmer, G, Pappou, E, Park, J, Patsouras, D, Pellino, G, Peterson, A C, Poggioli, G, Proud, D, Quinn, M, Quyn, A, Radwan, R W, Rasmussen, P C, Rausa, E, Regenbogen, S E, Renehan, A, Rocha, R, Rochester, M, Rohila, J, Rothbarth, J, Rottoli, M, Roxburgh, C, Rutten, H J T, Ryan, É J, Safar, B, Sagar, P M, Sahai, A, Saklani, A, Sammour, T, Sayyed, R, Schizas, A M P, Schwarzkopf, E, Scripcariu, V, Selvasekar, C, Shaikh, I, Shida, D, Simpson, A, Smart, N J, Smart, P, Smith, J J, Solbakken, A M, Solomon, M J, Sørensen, M M, Steele, S R, Steffens, D, Stitzenberg, K, Stocchi, L, Stylianides, N A, Swartling, T, Sumrien, H, Sutton, P A, Swartking, T, Taylor, C, Teras, J, Thurairaja, R, Toh, E L, Tsarkov, P, Tsukada, Y, Tsukamoto, S, Tuech, J J, Turner, W H, Tuynman, J B, Ramshorst, G H van, Zoggel, D van, Vasquez-Jimenez, W, Verhoef, C, Vizzielli, G, Voogt, E L K, Uehara, K, Wakeman, C, Warrier, S, Wasmuth, H H, Weber, K, Weiser, M R, Wheeler, J M D, Wild, J, Wilson, M, Wolthuis, A, Yano, H, Yip, B, Yip, J, Yoo, R N, Winter, D C, Tekkis, P P, Mcarthur, D R, Mcdermott, F D, Mcgrath, J S, Psychiatrie & Neuropsychologie, RS: MHeNs - R1 - Cognitive Neuropsychiatry and Clinical Neuroscience, RS: GROW - R3 - Innovative Cancer Diagnostics & Therapy, Faculteit FHML Centraal, Health Services Research, RS: CAPHRI - R1 - Ageing and Long-Term Care, RS: FdR IC Goederenrecht, School Office GROW, and Amsterdam Gastroenterology Endocrinology Metabolism

Subjects
BLOOD-TRANSFUSION, CARDIAC RISK, AcademicSubjects/MED00910, medicine.medical_treatment, Delphi method, Computer-assisted web interviewing, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], 0302 clinical medicine, 030202 anesthesiology, Multidisciplinary approach, Medicine and Health Sciences, Medicine, humans, RISK, COMPLICATIONS, Perioperative management - anaesthetic - pelvic exenterations - rectal cancer - Delphi - PelvEx Collaborative, Manchester Cancer Research Centre, General Medicine, SYSTEMIC INFLAMMATORY RESPONSE, 030220 oncology & carcinogenesis, Original Article, Medical emergency, EPIDURAL-ANESTHESIA, AcademicSubjects/MED00010, Life Sciences & Biomedicine, Consensus, ENHANCED RECOVERY, Best practice, education, MEDLINE, patient care team/organization & administration, 03 medical and health sciences, anesthetics, Humans, MAJOR ABDOMINAL-SURGERY, METAANALYSIS, RECTAL-CANCER, Anesthetics, Patient Care Team, Science & Technology, Pelvic exenteration, business.industry, ResearchInstitutes_Networks_Beacons/mcrc, MORTALITY, LONG-TERM SURVIVAL, Perioperative, COMPARTMENT SYNDROME, medicine.disease, pelvic exenteration, Pelvic Exenteration, Subject-matter expert, consensus, Surgery, business
Abstract

Background The multidisciplinary perioperative and anaesthetic management of patients undergoing pelvic exenteration is essential for good surgical outcomes. No clear guidelines have been established, and there is wide variation in clinical practice internationally. This consensus statement consolidates clinical experience and best practice collectively, and systematically addresses key domains in the perioperative and anaesthetic management. Methods The modified Delphi methodology was used to achieve consensus from the PelvEx Collaborative. The process included one round of online questionnaire involving controlled feedback and structured participant response, two rounds of editing, and one round of web-based voting. It was held from December 2019 to February 2020. Consensus was defined as more than 80 per cent agreement, whereas less than 80 per cent agreement indicated low consensus. Results The final consensus document contained 47 voted statements, across six key domains of perioperative and anaesthetic management in pelvic exenteration, comprising preoperative assessment and preparation, anaesthetic considerations, perioperative management, anticipating possible massive haemorrhage, stress response and postoperative critical care, and pain management. Consensus recommendations were developed, based on consensus agreement achieved on 34 statements. Conclusion The perioperative and anaesthetic management of patients undergoing pelvic exenteration is best accomplished by a dedicated multidisciplinary team with relevant domain expertise in the setting of a specialized tertiary unit. This consensus statement has addressed key domains within the framework of current perioperative and anaesthetic management among patients undergoing pelvic exenteration, with an international perspective, to guide clinical practice, and has outlined areas for future clinical research., The PelvEx Collaborative consensus statement systematically addresses the perioperative and anaesthetic management of patients undergoing pelvic exenteration (PE). Using the modified Delphi methodology, recommendations across six key clinical domains comprising preoperative assessment and preparation, anaesthetic considerations, perioperative management, anticipating possible massive haemorrhage, stress response and postoperative critical care, and pain management were developed. pelvic exenteratio and recommendation

Published
2021
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6. Contemporary management of locally advanced and recurrent rectal cancer: views from the PelvEx collaborative

Author

Kelly M. E., O’Sullivan N. J., Fahy M. R., Aalbers A. G. J., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Abu Saadeh F., Akiyoshi T., Alberda W., Albert M., Andric M., Angeles M. A., Angenete E., Antoniou A., Auer R., Austin K. K., Aytac E., Aziz O., Bacalbasa N., Baker R. P., Bali M., Baransi S., Baseckas G., Bebington B., Bedford M., Bednarski B. K., Beets G. L., Berg P. L., Bergzoll C., Beynon J., Biondo S., Boyle K., Bordeianou L., Brecelj E., Bremers A. B., Brunner M., Buchwald P., Bui A., Burgess A., Burger J. W. A., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Ceelen W., Chan K. K. L., Chang G. J., Chang M., Chew M. H., Chok A. Y., Chong P., Clouston H., Codd M., Collins D., Colquhoun A. J., Constantinides J., Corr A., Coscia M., Cosimelli M., Cotsoglou C., Coyne P. E., Croner R. S., Damjanovich L., Daniels I. R., Davies M., Delaney C. P., de Wilt J. H. W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E. J., Drozdov E., Duff M., Eglinton T., Enriquez-Navascues J. M., Espín-Basany E., Evans M. D., Eyjólfsdóttir B., Fearnhead N. S., Ferron G., Fichtner-Feigl S., Flatmark K., Fleming F. J., Flor B., Folkesson J., Frizelle F. A., Funder J., Gallego M. A., Gargiulo M., García-Granero E., García-Sabrido J. L., Gava V. G., Gentilini L., George M. L., George V., Georgiou P., Ghosh A., Ghouti L., Gil-Moreno A., Giner F., Ginther D. N., Glyn T., Glynn R., Golda T., Griffiths B., Harris D. A., Hanchanale V., Harji D. P., Harris C., Helewa R. M., Hellawell G., Heriot A. G., Hochman D., HohenbergerW., Holm T., Hompes R., Hornung B., Hurton S., Hyun E., Ito M., Iversen L. H., Jenkins J. T., Jourand K., Kaffenberger S., Kandaswamy G. V., Kapur S., Kanemitsu Y., Kazi M., Kelley S. R., Keller D. S., Ketelaers S. H. J., Khan M. S., Kiran R. P., Kim H., Kim H. J., Koh C. E., Kok N. F. M., Kokelaar R., Kontovounisios C., Kose F., Koutra M., Kristensen H. Ø., Kroon H. M., Kumar S., Kusters M., Lago V., Lampe B., Lakkis Z., Larach J. T., Larkin J. O., Larsen S. G., Larson D. W., Law W. L., Lee P. J., Limbert M., Loria A., Lydrup ML., Lyons A., Lynch A. C., Maciel J., Manfredelli S., Mann C., Mantyh C., Mathis K. L., Marques C. F. S., Martinez A., Martling A., Mehigan B. J., MeijerinkW. J. H. J., Merchea A., Merkel S., Mehta A. M., Mikalauskas S., McArthur D. R., McCormick J. J., McCormick P., McDermott F. D., McGrath J. S., Malde S., Mirnezami A., Monson J. R. T., Navarro A. S., Neeff H., Negoi I., Neto J. W. M., Ng J. L., Nguyen B., Nielsen M. B., Nieuwenhuijzen G. A. P., Nilsson P. J., Nordkamp S., Nugent T., Oliver A., O’Dwyer S. T., Paarnio K., Palmer G., Pappou E., Park J., Patsouras D., Peacock O., Pellino G., Peterson A. C., Pfeffer F., Pinson J., Poggioli G., Proud D., Quinn M., Quyn A., Rajendran N., Radwan R. W., Rao C., Rasheed S., Rausa E., Regenbogen S. E., Reims H. M., Renehan A., Rintala J., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Rutten H. J. T., Safar B., Sagar P. M., Sahai A., Saklani A., Sammour T., Sayyed R., Schizas A. M. P., Schwarzkopf E., Scripcariu D., Scripcariu V., Selvasekar C., Shaikh I., Simpson A., Skeie-Jensen T., Smart N. J., Smart P., Smith J. J., Solbakken A. M., Solomon M. J., Sørensen M. M., Sorrentino L., Steele S. R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N. A., Swartling T., Spasojevic M., Sumrien H., Sutton P. A., Swartking T., Takala H., Tan E. J., Taylor C., Taylor D., Tekin A., Tekkis P. P., Teras J., Thaysen H. V., Thurairaja R., Thorgersen E. B., Tiernan J., Toh E. L., Tolenaar J., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J. J., Turner W. H., Tuynman J. B., Valente M., van Ramshorst G. H., van Rees J., van Zoggel D., Vasquez-JimenezW., Vather R., Verhoef C., Vierimaa M., Vizzielli G., Voogt E. L. K., Uehara K., Urrejola G., Wakeman C., Warrier S. K., Wasmuth H. H., Waters P. S., Weber K., Weiser M. R., Wheeler J. M. D., Wild J., Williams A., Wilson M., Wolthuis A., Yano H., Yip B., Yoo R. N., Zappa M. A., Winter D. C., and Kelly M.E., O’Sullivan N.J., Fahy M.R., Aalbers A.G.J., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Abu Saadeh F., Akiyoshi T., Alberda W., Albert M., Andric M., Angeles M.A., Angenete E., Antoniou A., Auer R., Austin K.K., Aytac E., Aziz O., Bacalbasa N., Baker R.P., Bali M., Baransi S., Baseckas G., Bebington B., Bedford M., Bednarski B.K., Beets G.L., Berg P.L., Bergzoll C., Beynon J., Biondo S., Boyle K., Bordeianou L., Brecelj E., Bremers A.B., Brunner M., Buchwald P., Bui A., Burgess A., Burger J.W.A., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Ceelen W., Chan K.K.L., Chang G.J., Chang M., Chew M.H., Chok A.Y., Chong P., Clouston H., Codd M., Collins D., Colquhoun A.J., Constantinides J., Corr A., Coscia M., Cosimelli M., Cotsoglou C., Coyne P.E., Croner R.S., Damjanovich L., Daniels I.R., Davies M., Delaney C.P., de Wilt J.H.W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E.J., Drozdov E., Duff M., Eglinton T., Enriquez-Navascues J.M., Espín-Basany E., Evans M.D., Eyjólfsdóttir B., Fearnhead N.S., Ferron G., Fichtner-Feigl S., Flatmark K., Fleming F.J., Flor B., Folkesson J., Frizelle F.A., Funder J., Gallego M.A., Gargiulo M., García-Granero E., García-Sabrido J.L., Gargiulo M., Gava V.G., Gentilini L., George M.L., George V., Georgiou P., Ghosh A., Ghouti L., Gil-Moreno A., Giner F., Ginther D.N., Glyn T., Glynn R., Golda T., Griffiths B., Harris D.A., Hanchanale V., Harji D.P., Harris C., Helewa R.M., Hellawell G., Heriot A.G., Hochman D., HohenbergerW., Holm T., Hompes R., Hornung B., Hurton S., Hyun E., Ito M., Iversen L.H., Jenkins J.T., Jourand K., Kaffenberger S., Kandaswamy G.V., Kapur S., Kanemitsu Y., Kazi M., Kelley S.R., Keller D.S., Ketelaers S.H.J., Khan M.S., Kiran R.P., Kim H., Kim H.J., Koh C.E., Kok N.F.M., Kokelaar R., Kontovounisios C., Kose F., Koutra M., Kristensen H.Ø., Kroon H.M., Kumar S., Kusters M., Lago V., Lampe B., Lakkis Z., Larach J.T., Larkin J.O., Larsen S.G., Larson D.W., Law W.L., Lee P.J., Limbert M., Loria A., Lydrup ML., Lyons A., Lynch A.C., Maciel J., Manfredelli S., Mann C., Mantyh C., Mathis K.L., Marques C.F.S., Martinez A., Martling A., Mehigan B.J., MeijerinkW.J.H.J., Merchea A., Merkel S., Mehta A.M., Mikalauskas S., McArthur D.R., McCormick J.J., McCormick P., McDermott F.D., McGrath J.S., Malde S., Mirnezami A., Monson J.R.T., Navarro A.S., Neeff H., Negoi I., Neto J.W.M., Ng J.L., Nguyen B., Nielsen M.B., Nieuwenhuijzen G.A.P., Nilsson P.J., Nordkamp S., Nugent T., Oliver A., O’Dwyer S.T., Paarnio K., Palmer G., Pappou E., Park J., Patsouras D., Peacock O., Pellino G., Peterson A.C., Pfeffer F., Pinson J., Poggioli G., Proud D., Quinn M., Quyn A., Rajendran N., Radwan R.W., Rajendran N., Rao C., Rasheed S., Rausa E., Regenbogen S.E., Reims H.M., Renehan A., Rintala J., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Rutten H.J.T., Safar B., Sagar P.M., Sahai A., Saklani A., Sammour T., Sayyed R., Schizas A.M.P., Schwarzkopf E., Scripcariu D., Scripcariu V., Selvasekar C., Shaikh I., Simpson A., Skeie-Jensen T., Smart N.J., Smart P., Smith J.J., Solbakken A.M., Solomon M.J., Sørensen M.M., Sorrentino L., Steele S.R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N.A., Swartling T., Spasojevic M., Sumrien H., Sutton P.A., Swartking T., Takala H., Tan E.J., Taylor C., Taylor D., Tekin A., Tekkis P.P., Teras J., Thaysen H.V., Thurairaja R., Thorgersen E.B., Tiernan J., Toh E.L., Tolenaar J., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J.J., Turner W.H., Tuynman J.B., Valente M., van Ramshorst G.H., van Rees J., van Zoggel D., Vasquez-JimenezW., Vather R., Verhoef C., Vierimaa M., Vizzielli G., Voogt E.L.K., Uehara K., Urrejola G., Wakeman C., Warrier S.K.,Wasmuth H.H.,Waters P.S.,Weber K.,Weiser M.R., Wheeler J.M.D.,Wild J., Williams A., Wilson M., Wolthuis A., Yano H., Yip B., Yoo R.N., Zappa M.A., Winter D.C.

Subjects
Cancer Research, perioperative care, ENHANCED RECOVERY, diagnostic, EXENTERATION, surgical management, surgical outcomes, recurrent rectal cancer, SDG 3 - Good Health and Well-being, locally advanced rectal cancer, QUALITY-OF-LIFE, Medicine and Health Sciences, diagnostics, 1112 Oncology and Carcinogenesis, PATHOLOGICAL COMPLETE RESPONSE, rectal cancer, SURGICAL TECHNIQUES, OUTCOMES, Science & Technology, HYPERTHERMIC INTRAPERITONEAL, PelvEx Collaborative, CHEMOTHERAPY, WHOLE-BODY MRI, NEOADJUVANT CHEMORADIOTHERAPY, Oncology, quality of life, CYTOREDUCTIVE SURGERY, HYPERTHERMIC INTRAPERITONEAL CHEMOTHERAPY, Life Sciences & Biomedicine
Abstract

Pelvic exenteration is a complex operation performed for locally advanced and recurrent pelvic cancers. The goal of surgery is to achieve clear margins, therefore identifying adjacent or involved organs, bone, muscle, nerves and/or vascular structures that may need resection. While these extensive resections are potentially curative, they can be associated with substantial morbidity. Recently, there has been a move to centralize care to specialized units, as this facilitates better multidisciplinary care input. Advancements in pelvic oncology and surgical innovation have redefined the boundaries of pelvic exenterative surgery. Combined with improved neoadjuvant therapies, advances in diagnostics, and better reconstructive techniques have provided quicker recovery and better quality of life outcomes, with improved survival This article provides highlights of the current management of advanced pelvic cancers in terms of surgical strategy and potential future developments.

Published
2022
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9. The impact of the COVID-19 pandemic on the Management of Locally Advanced Primary/Recurrent Rectal Cancer

Author

Chok A. Y., Kontovounisios C., Rasheed S., Kelly M. E., Agj A., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Akiyoshi T., Alberda W., Albert M., Andric M., Angenete E., Antoniou A., Auer R., Austin K. K., Aziz O., Baker R. P., Bali M., Baseckas G., Bebington B., Bedford M., Bednarski B. K., Beets G. L., Berg P. L., Beynon J., Biondo S., Boyle K., Bordeianou L., Bremers A. B., Brunner M., Buchwald P., Bui A., Burgess A., Jwa B., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Kkl C., Chang G. J., Chang M., Chew M. H., Chong P., Christensen H. K., Clouston H., Codd M., Collins D., Colquhoun A. J., Corr A., Coscia M., Cosimelli M., Coyne P. E., Creavin B., Croner R. S., Damjanovic L., Daniels I. R., Davies M., Davies R. J., Delaney C. P., Jhw D. W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E. J., Duff M., Eglinton T., Enrique-Navascues J. M., Espin-Basany E., Evans M. D., Fearnhead N. S., Flatmark K., Fleming F., Frizelle F. A., Gallego M. A., Garcia-Granero E., Garcia-Sabrido J. L., Gentilini L., George M. L., George V., Ghouti L., Giner F., Ginther N., Glynn R., Golda T., Griffiths B., Harris D. A., Jaw H., Hanchanale V., Harji D. P., Helewa R. M., Hellawell G., Heriot A. G., Hochman D., Hohenberger W., Holm T., Hompes R., Jenkins J. T., Kaffenberger S., Kandaswamy G. V., Kapur S., Kanemitsu Y., Kelley S. R., Keller D. S., Khan M. S., Kim H., Kim H. J., Koh C. E., Nfm K., Kokelaar R., Kristensen H. O., Kroon H. M., Kusters M., Lago V., Larsen S. G., Larson D. W., Law W. L., Laurberg S., Lee P. J., Limbert M., Lydrup M. L., Lyons A., Lynch A. C., Mantyh C., Mathis K. L., Cfs M., Martling A., Wjhj M., Merkel S., Mehta A. M., McArthur D. R., McDermott F. D., McGrath J. S., Malde S., Mirnezami A., Jrt M., Morton J. R., Mullaney T. G., Negoi I., Jwm N., Ng J. L., Nguyen B., Nielsen M. B., Gap N., Nilsson P. J., Oliver A., O'Dwyer S. T., Palmer G., Pappou E., Park J., Patsouras D., Pellino G., Peterson A. C., Poggioli G., Proud D., Quinn M., Quyn A., Radwan R. W., Rasmussen P. C., Rausa E., Regenbogen S. E., Renehan A., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Hjt R., Ryan E. J., Safar B., Sagar P. M., Sahai A., Saklani A., Sammour T., Sayyed R., Amp S., Schwarzkopf E., Scripcariu V., Selvasekar C., Shaikh I., Shida D., Simpson A., Smart N. J., Smart P., Smith J. J., Solbakken A. M., Solomon M. J., Sorensen M. M., Steele S. R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N. A., Swartling T., Sumrien H., Sutton P. A., Swartking T., Tan E. J., Taylor C., Teras J., Thurairaja R., Toh E. L., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J. J., Turner W. H., Tuynman J. B., van Ramshorst G. H., van Zoggel D., Vasquez-Jimenez W., Verhoef C., Vizzielli G., Elk V., Uehara K., Wakeman C., Warrier S., Wasmuth H. H., Weber K., Weiser M. R., Jmd W., Wild J., Wilson M., Wolthuis A., Yano H., Yip B., Yip J., Yoo R. N., Zappa M. A., Winter D. C., Tekkis P. P., Chok A.Y., Kontovounisios C., Rasheed S., Kelly M.E., Agj A., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Akiyoshi T., Alberda W., Albert M., Andric M., Angenete E., Antoniou A., Auer R., Austin K.K., Aziz O., Baker R.P., Bali M., Baseckas G., Bebington B., Bedford M., Bednarski B.K., Beets G.L., Berg P.L., Beynon J., Biondo S., Boyle K., Bordeianou L., Bremers A.B., Brunner M., Buchwald P., Bui A., Burgess A., Jwa B., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Kkl C., Chang G.J., Chang M., Chew M.H., Chong P., Christensen H.K., Clouston H., Codd M., Collins D., Colquhoun A.J., Corr A., Coscia M., Cosimelli M., Coyne P.E., Creavin B., Croner R.S., Damjanovic L., Daniels I.R., Davies M., Davies R.J., Delaney C.P., Jhw D.W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E.J., Duff M., Eglinton T., Enrique-Navascues J.M., Espin-Basany E., Evans M.D., Fearnhead N.S., Flatmark K., Fleming F., Frizelle F.A., Gallego M.A., Garcia-Granero E., Garcia-Sabrido J.L., Gentilini L., George M.L., George V., Ghouti L., Giner F., Ginther N., Glynn R., Golda T., Griffiths B., Harris D.A., Jaw H., Hanchanale V., Harji D.P., Helewa R.M., Hellawell G., Heriot A.G., Hochman D., Hohenberger W., Holm T., Hompes R., Jenkins J.T., Kaffenberger S., Kandaswamy G.V., Kapur S., Kanemitsu Y., Kelley S.R., Keller D.S., Khan M.S., Kim H., Kim H.J., Koh C.E., Nfm K., Kokelaar R., Kristensen H.O., Kroon H.M., Kusters M., Lago V., Larsen S.G., Larson D.W., Law W.L., Laurberg S., Lee P.J., Limbert M., Lydrup M.L., Lyons A., Lynch A.C., Mantyh C., Mathis K.L., Cfs M., Martling A., Wjhj M., Merkel S., Mehta A.M., McArthur D.R., McDermott F.D., McGrath J.S., Malde S., Mirnezami A., Jrt M., Morton J.R., Mullaney T.G., Negoi I., Jwm N., Ng J.L., Nguyen B., Nielsen M.B., Gap N., Nilsson P.J., Oliver A., O'Dwyer S.T., Palmer G., Pappou E., Park J., Patsouras D., Pellino G., Peterson A.C., Poggioli G., Proud D., Quinn M., Quyn A., Radwan R.W., Rasmussen P.C., Rausa E., Regenbogen S.E., Renehan A., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Hjt R., Ryan E.J., Safar B., Sagar P.M., Sahai A., Saklani A., Sammour T., Sayyed R., Amp S., Schwarzkopf E., Scripcariu V., Selvasekar C., Shaikh I., Shida D., Simpson A., Smart N.J., Smart P., Smith J.J., Solbakken A.M., Solomon M.J., Sorensen M.M., Steele S.R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N.A., Swartling T., Sumrien H., Sutton P.A., Swartking T., Tan E.J., Taylor C., Teras J., Thurairaja R., Toh E.L., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J.J., Turner W.H., Tuynman J.B., van Ramshorst G.H., van Zoggel D., Vasquez-Jimenez W., Verhoef C., Vizzielli G., Elk V., Uehara K., Wakeman C., Warrier S., Wasmuth H.H., Weber K., Weiser M.R., Jmd W., Wild J., Wilson M., Wolthuis A., Yano H., Yip B., Yip J., Yoo R.N., Zappa M.A., Winter D.C., Tekkis P.P., Chok, A. Y., Kontovounisios, C., Rasheed, S., Kelly, M. E., Agj, A., Abdul Aziz, N., Abecasis, N., Abraham-Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bedford, M., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Jwa, B., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo-Marulanda, A., Kkl, C., Chang, G. J., Chang, M., Chew, M. H., Chong, P., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Cosimelli, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Jhw, D. W., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique-Navascues, J. M., Espin-Basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., George, V., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Jaw, H., Hanchanale, V., Harji, D. P., Helewa, R. M., Hellawell, G., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kim, H., Kim, H. J., Koh, C. E., Nfm, K., Kokelaar, R., Kristensen, H. O., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Cfs, M., Martling, A., Wjhj, M., Merkel, S., Mehta, A. M., Mcarthur, D. R., Mcdermott, F. D., Mcgrath, J. S., Malde, S., Mirnezami, A., Jrt, M., Morton, J. R., Mullaney, T. G., Negoi, I., Jwm, N., Ng, J. L., Nguyen, B., Nielsen, M. B., Gap, N., Nilsson, P. J., Oliver, A., O'Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., Rasmussen, P. C., Rausa, E., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Hjt, R., Ryan, E. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Amp, S., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sorensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Swartling, T., Sumrien, H., Sutton, P. A., Swartking, T., Tan, E. J., Taylor, C., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., van Ramshorst, G. H., van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Vizzielli, G., Elk, V., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Jmd, W., Wild, J., Wilson, M., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., Zappa, M. A., Winter, D. C., Tekkis, P. P., and Surgery

Subjects
Oncology, medicine.medical_specialty, Coronavirus disease 2019 (COVID-19), Locally advanced, MEDLINE, Comorbidity, COVID-19 - advanced - recurrent - primary - rectal cancer, SDG 3 - Good Health and Well-being, Internal medicine, Pandemic, Correspondence, medicine, Combined Modality Therapy, Humans, General, Pandemics, Recurrent Rectal Cancer, Neoplasm Staging, business.industry, Rectal Neoplasms, SARS-CoV-2, COVID-19, medicine.disease, Neoplasm staging, Surgery, Neoplasm Recurrence, Local, business
Published
2020

10. Predicting outcomes of pelvic exenteration using machine learning

Author

Dudurych I., Kelly M. E., Aalbers A. G. J., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Akiyoshi T., Alberda W., Albert M., Andric M., Angenete E., Antoniou A., Auer R., Austin K. K., Aziz O., Baker R. P., Bali M., Baseckas G., Bebington B., Bedford M., Bednarski B. K., Beets G. L., Berg P. L., Beynon J., Biondo S., Boyle K., Bordeianou L., Bremers A. B., Brunner M., Buchwald P., Bui A., Burgess A., Burger J. W. A., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Chan K. K. L., Chang G. J., Chew M. H., Chok A. K., Chong P., Christensen H. K., Clouston H., Codd M., Collins D., Colquhoun A. J., Corr A., Coscia M., Coyne P. E., Creavin B., Croner R. S., Damjanovic L., Daniels I. R., Davies M., Davies R. J., Delaney C. P., Wilt J. H. W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E. J., Duff M., Eglinton T., Enrique-Navascues J. M., Espin-Basany E., Evans M. D., Fearnhead N. S., Flatmark K., Fleming F., Frizelle F. A., Gallego M. A., Garcia-Granero E., Garcia-Sabrido J. L., Gentilini L., George M. L., George V., Ghouti L., Giner F., Ginther N., Glynn R., Golda T., Griffiths B., Harris D. A., Hagemans J. A. W., Hanchanale V., Harji D. P., Helewa R. M., Heriot A. G., Hochman D., Hohenberger W., Holm T., Hompes R., Jenkins J. T., Kaffenberger S., Kandaswamy G. V., Kapur S., Kanemitsu Y., Kelley S. R., Keller D. S., Khan M. S., Kiran R. P., Kim H., Kim H. J., Koh C. E., Kok N. F. M., Kokelaar R., Kontovounisios C., Kristensen H. O., Kroon H. M., Kusters M., Lago V., Larsen S. G., Larson D. W., Law W. L., Laurberg S., Lee P. J., Limbert M., Lydrup M. L., Lyons A., Lynch A. C., Mantyh C., Mathis K. L., Margues C. F. S., Martling A., Meijerink W. J. H. J., Merkel S., Mehta A. M., McArthur D. R., McDermott F. D., McGrath J. S., Malde S., Mirnezami A., Monson J. R. T., Morton J. R., Mullaney T. G., Negoi I., Neto J. W. M., Nguyen B., Nielsen M. B., Nieuwenhuijzen G. A. P., Nilsson P. J., Oliver A., O'Connell P. R., O'Dwyer S. T., Palmer G., Pappou E., Park J., Patsouras D., Pellino G., Peterson A. C., Poggioli G., Proud D., Quinn M., Quyn A., Radwan R. W., Rasheed S., Rasmussen P. C., Regenbogen S. E., Renehan A., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Rutten H. J. T., Ryan E. J., Safar B., Sagar P. M., Sahai A., Saklani A., Sammour T., Sayyed R., Schizas A. M. P., Schwarzkopf E., Scripcariu V., Selvasekar C., Shaikh I., Shellawell G., Shida D., Simpson A., Smart N. J., Smart P., Smith J. J., Solbakken A. M., Solomon M. J., Sorensen M. M., Steele S. R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N. A., Swartling T., Sumrien H., Sutton P. A., Swartking T., Tan E. J., Taylor C., Tekkis P. P., Teras J., Thurairaja R., Toh E. L., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J. J., Turner W. H., Tuynman J. B., van Ramshorst G. H., van Zoggel D., Vasquez-Jimenez W., Verhoef C., Vizzielli G., Voogt E. L. K., Uehara K., Wakeman C., Warrier S., Wasmuth H. H., Weber K., Weiser M. R., Wheeler J. M. D., Wild J., Wilson M., Wolthuis A., Yano H., Yip B., Yip J., Yoo R. N., Winter D. C., Dudurych I., Kelly M.E., Aalbers A.G.J., Abdul Aziz N., Abecasis N., Abraham-Nordling M., Akiyoshi T., Alberda W., Albert M., Andric M., Angenete E., Antoniou A., Auer R., Austin K.K., Aziz O., Baker R.P., Bali M., Baseckas G., Bebington B., Bedford M., Bednarski B.K., Beets G.L., Berg P.L., Beynon J., Biondo S., Boyle K., Bordeianou L., Bremers A.B., Brunner M., Buchwald P., Bui A., Burgess A., Burger J.W.A., Burling D., Burns E., Campain N., Carvalhal S., Castro L., Caycedo-Marulanda A., Chan K.K.L., Chang G.J., Chew M.H., Chok A.K., Chong P., Christensen H.K., Clouston H., Codd M., Collins D., Colquhoun A.J., Corr A., Coscia M., Coyne P.E., Creavin B., Croner R.S., Damjanovic L., Daniels I.R., Davies M., Davies R.J., Delaney C.P., Wilt J.H.W., Denost Q., Deutsch C., Dietz D., Domingo S., Dozois E.J., Duff M., Eglinton T., Enrique-Navascues J.M., Espin-Basany E., Evans M.D., Fearnhead N.S., Flatmark K., Fleming F., Frizelle F.A., Gallego M.A., Garcia-Granero E., Garcia-Sabrido J.L., Gentilini L., George M.L., George V., Ghouti L., Giner F., Ginther N., Glynn R., Golda T., Griffiths B., Harris D.A., Hagemans J.A.W., Hanchanale V., Harji D.P., Helewa R.M., Heriot A.G., Hochman D., Hohenberger W., Holm T., Hompes R., Jenkins J.T., Kaffenberger S., Kandaswamy G.V., Kapur S., Kanemitsu Y., Kelley S.R., Keller D.S., Khan M.S., Kiran R.P., Kim H., Kim H.J., Koh C.E., Kok N.F.M., Kokelaar R., Kontovounisios C., Kristensen H.O., Kroon H.M., Kusters M., Lago V., Larsen S.G., Larson D.W., Law W.L., Laurberg S., Lee P.J., Limbert M., Lydrup M.L., Lyons A., Lynch A.C., Mantyh C., Mathis K.L., Margues C.F.S., Martling A., Meijerink W.J.H.J., Merkel S., Mehta A.M., McArthur D.R., McDermott F.D., McGrath J.S., Malde S., Mirnezami A., Monson J.R.T., Morton J.R., Mullaney T.G., Negoi I., Neto J.W.M., Nguyen B., Nielsen M.B., Nieuwenhuijzen G.A.P., Nilsson P.J., Oliver A., O'Connell P.R., O'Dwyer S.T., Palmer G., Pappou E., Park J., Patsouras D., Pellino G., Peterson A.C., Poggioli G., Proud D., Quinn M., Quyn A., Radwan R.W., Rasheed S., Rasmussen P.C., Regenbogen S.E., Renehan A., Rocha R., Rochester M., Rohila J., Rothbarth J., Rottoli M., Roxburgh C., Rutten H.J.T., Ryan E.J., Safar B., Sagar P.M., Sahai A., Saklani A., Sammour T., Sayyed R., Schizas A.M.P., Schwarzkopf E., Scripcariu V., Selvasekar C., Shaikh I., Shellawell G., Shida D., Simpson A., Smart N.J., Smart P., Smith J.J., Solbakken A.M., Solomon M.J., Sorensen M.M., Steele S.R., Steffens D., Stitzenberg K., Stocchi L., Stylianides N.A., Swartling T., Sumrien H., Sutton P.A., Swartking T., Tan E.J., Taylor C., Tekkis P.P., Teras J., Thurairaja R., Toh E.L., Tsarkov P., Tsukada Y., Tsukamoto S., Tuech J.J., Turner W.H., Tuynman J.B., van Ramshorst G.H., van Zoggel D., Vasquez-Jimenez W., Verhoef C., Vizzielli G., Voogt E.L.K., Uehara K., Wakeman C., Warrier S., Wasmuth H.H., Weber K., Weiser M.R., Wheeler J.M.D., Wild J., Wilson M., Wolthuis A., Yano H., Yip B., Yip J., Yoo R.N., Winter D.C., Surgery, Dudurych, I., Kelly, M. E., Aalbers, A. G. J., Abdul Aziz, N., Abecasis, N., Abraham-Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bedford, M., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Burger, J. W. A., Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo-Marulanda, A., Chan, K. K. L., Chang, G. J., Chew, M. H., Chok, A. K., Chong, P., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Coyne, P. E., Creavin, B., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Wilt, J. H. W., Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique-Navascues, J. M., Espin-Basany, E., Evans, M. D., Fearnhead, N. S., Flatmark, K., Fleming, F., Frizelle, F. A., Gallego, M. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., George, V., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Hagemans, J. A. W., Hanchanale, V., Harji, D. P., Helewa, R. M., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kiran, R. P., Kim, H., Kim, H. J., Koh, C. E., Kok, N. F. M., Kokelaar, R., Kontovounisios, C., Kristensen, H. O., Kroon, H. M., Kusters, M., Lago, V., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Margues, C. F. S., Martling, A., Meijerink, W. J. H. J., Merkel, S., Mehta, A. M., Mcarthur, D. R., Mcdermott, F. D., Mcgrath, J. S., Malde, S., Mirnezami, A., Monson, J. R. T., Morton, J. R., Mullaney, T. G., Negoi, I., Neto, J. W. M., Nguyen, B., Nielsen, M. B., Nieuwenhuijzen, G. A. P., Nilsson, P. J., Oliver, A., O'Connell, P. R., O'Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Rutten, H. J. T., Ryan, E. J., Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Schizas, A. M. P., Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Shellawell, G., Shida, D., Simpson, A., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sorensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Swartling, T., Sumrien, H., Sutton, P. A., Swartking, T., Tan, E. J., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., van Ramshorst, G. H., van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Vizzielli, G., Voogt, E. L. K., Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Wheeler, J. M. D., Wild, J., Wilson, M., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., and Winter, D. C.

Subjects
Artificial intelligence, medicine.medical_treatment, Machine learning, computer.software_genre, Logistic regression, Tumours of the digestive tract Radboud Institute for Health Sciences [Radboudumc 14], SDG 3 - Good Health and Well-being, Medicine, Humans, Pelvic exenteration, Receiver operating characteristic, Artificial neural network, business.industry, Rectal Neoplasms, Deep learning, Gastroenterology, Prognosis, pelvic exenteration, Support vector machine, machine learning, Test set, colorectal surgery, Neoplasm Recurrence, Local, business, computer, Predictive modelling, artificial neural network
Abstract

Aim: We aim to compare machine learning with neural network performance in predicting R0 resection (R0), length of stay >14days (LOS), major complication rates at 30days postoperatively (COMP) and survival greater than 1 year (SURV) for patients having pelvic exenteration for locally advanced and recurrent rectal cancer. Method: A deep learning computer was built and the programming environment was established. The PelvEx Collaborative database was used which contains anonymized data on patients who underwent pelvic exenteration for locally advanced or locally recurrent colorectal cancer between 2004 and 2014. Logistic regression, a support vector machine and an artificial neural network (ANN) were trained. Twenty per cent of the data were used as a test set for calculating prediction accuracy for R0, LOS, COMP and SURV. Model performance was measured by plotting receiver operating characteristic (ROC) curves and calculating the area under the ROC curve (AUROC). Results: Machine learning models and ANNs were trained on 1147 cases. The AUROC for all outcome predictions ranged from 0.608 to 0.793 indicating modest to moderate predictive ability. The models performed best at predicting LOS >14days with an AUROC of 0.793 using preoperative and operative data. Visualized logistic regression model weights indicate a varying impact of variables on the outcome in question. Conclusion: This paper highlights the potential for predictive modelling of large international databases. Current data allow moderate predictive ability of both complex ANNs and more classic methods.

Published
2020

21. The global cost of pelvic exenteration:in-hospital perioperative costs

Author

Kelly, M. E., Agj, Aalbers, Abdul Aziz, N., Abecasis, N., Abraham-Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bedford, M., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Jwa, Burger, Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo-Marulanda, A., Kkl, Chan, Chang, G. J., Chang, M., Chew, M. H., Chok, A. K., Chong, P., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Cosimelli, M., Coyne, P. E., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Jhw, Wilt, Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique-Navascues, J. M., Espin-Basany, E., Evans, M. D., Eyjólfsdóttir, B., Fahy, M., Fearnhead, N. S., Flatmark, K., Fleming, F., Folkesson, J., Frizelle, F. A., Gallego, M. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., George, V., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Jaw, Hagemans, Hanchanale, V., Harji, D. P., Helewa, R. M., Hellawell, G., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kim, H. J., Koh, C. E., Nfm, Kok, Kokelaar, R., Kontovounisios, C., Kristensen, H., Kroon, H. M., Kumar, S., Kusters, M., Lago, V., Lakkis, Z., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Cfs, Margues, Martling, A., Wjhj, Meijerink, Merchea, A., Merkel, S., Mehta, A. M., McArthur, D. R., McDermott, F. D., McGrath, J. S., Malde, S., Mirnezami, A., Jrt, Monson, Morton, J. R., Mullaney, T. G., Negoi, I., Jwm, Neto, Ng, J. L., Nguyen, B., Nielsen, M. B., Gap, Nieuwenhuijzen, Nilsson, P. J., Oliver, A., O'Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Rajendran, N., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Rausa, E., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Hjt, Rutten, Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Amp, Schizas, Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Shida, D., Simpson, A., Skeie-Jensen, T., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Swartling, T., Sumrien, H., Sutton, P. A., Swartking, T., Tan, E. J., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., van Ramshorst, G. H., van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Vizzielli, G., Elk, Voogt, Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Jmd, Wheeler, Wild, J., Wilson, M., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., Zappa, M. A., Winter, D. C., Kelly, M. E., Agj, Aalbers, Abdul Aziz, N., Abecasis, N., Abraham-Nordling, M., Akiyoshi, T., Alberda, W., Albert, M., Andric, M., Angenete, E., Antoniou, A., Auer, R., Austin, K. K., Aziz, O., Baker, R. P., Bali, M., Baseckas, G., Bebington, B., Bedford, M., Bednarski, B. K., Beets, G. L., Berg, P. L., Beynon, J., Biondo, S., Boyle, K., Bordeianou, L., Bremers, A. B., Brunner, M., Buchwald, P., Bui, A., Burgess, A., Jwa, Burger, Burling, D., Burns, E., Campain, N., Carvalhal, S., Castro, L., Caycedo-Marulanda, A., Kkl, Chan, Chang, G. J., Chang, M., Chew, M. H., Chok, A. K., Chong, P., Christensen, H. K., Clouston, H., Codd, M., Collins, D., Colquhoun, A. J., Corr, A., Coscia, M., Cosimelli, M., Coyne, P. E., Croner, R. S., Damjanovic, L., Daniels, I. R., Davies, M., Davies, R. J., Delaney, C. P., Jhw, Wilt, Denost, Q., Deutsch, C., Dietz, D., Domingo, S., Dozois, E. J., Duff, M., Eglinton, T., Enrique-Navascues, J. M., Espin-Basany, E., Evans, M. D., Eyjólfsdóttir, B., Fahy, M., Fearnhead, N. S., Flatmark, K., Fleming, F., Folkesson, J., Frizelle, F. A., Gallego, M. A., Garcia-Granero, E., Garcia-Sabrido, J. L., Gentilini, L., George, M. L., George, V., Ghouti, L., Giner, F., Ginther, N., Glynn, R., Golda, T., Griffiths, B., Harris, D. A., Jaw, Hagemans, Hanchanale, V., Harji, D. P., Helewa, R. M., Hellawell, G., Heriot, A. G., Hochman, D., Hohenberger, W., Holm, T., Hompes, R., Jenkins, J. T., Kaffenberger, S., Kandaswamy, G. V., Kapur, S., Kanemitsu, Y., Kelley, S. R., Keller, D. S., Khan, M. S., Kim, H. J., Koh, C. E., Nfm, Kok, Kokelaar, R., Kontovounisios, C., Kristensen, H., Kroon, H. M., Kumar, S., Kusters, M., Lago, V., Lakkis, Z., Larsen, S. G., Larson, D. W., Law, W. L., Laurberg, S., Lee, P. J., Limbert, M., Lydrup, M. L., Lyons, A., Lynch, A. C., Mantyh, C., Mathis, K. L., Cfs, Margues, Martling, A., Wjhj, Meijerink, Merchea, A., Merkel, S., Mehta, A. M., McArthur, D. R., McDermott, F. D., McGrath, J. S., Malde, S., Mirnezami, A., Jrt, Monson, Morton, J. R., Mullaney, T. G., Negoi, I., Jwm, Neto, Ng, J. L., Nguyen, B., Nielsen, M. B., Gap, Nieuwenhuijzen, Nilsson, P. J., Oliver, A., O'Dwyer, S. T., Palmer, G., Pappou, E., Park, J., Patsouras, D., Pellino, G., Peterson, A. C., Poggioli, G., Proud, D., Quinn, M., Quyn, A., Rajendran, N., Radwan, R. W., Rasheed, S., Rasmussen, P. C., Rausa, E., Regenbogen, S. E., Renehan, A., Rocha, R., Rochester, M., Rohila, J., Rothbarth, J., Rottoli, M., Roxburgh, C., Hjt, Rutten, Safar, B., Sagar, P. M., Sahai, A., Saklani, A., Sammour, T., Sayyed, R., Amp, Schizas, Schwarzkopf, E., Scripcariu, V., Selvasekar, C., Shaikh, I., Shida, D., Simpson, A., Skeie-Jensen, T., Smart, N. J., Smart, P., Smith, J. J., Solbakken, A. M., Solomon, M. J., Sørensen, M. M., Steele, S. R., Steffens, D., Stitzenberg, K., Stocchi, L., Stylianides, N. A., Swartling, T., Sumrien, H., Sutton, P. A., Swartking, T., Tan, E. J., Taylor, C., Tekkis, P. P., Teras, J., Thurairaja, R., Toh, E. L., Tsarkov, P., Tsukada, Y., Tsukamoto, S., Tuech, J. J., Turner, W. H., Tuynman, J. B., van Ramshorst, G. H., van Zoggel, D., Vasquez-Jimenez, W., Verhoef, C., Vizzielli, G., Elk, Voogt, Uehara, K., Wakeman, C., Warrier, S., Wasmuth, H. H., Weber, K., Weiser, M. R., Jmd, Wheeler, Wild, J., Wilson, M., Wolthuis, A., Yano, H., Yip, B., Yip, J., Yoo, R. N., Zappa, M. A., and Winter, D. C.

Published
2020

22. A circular inclusion with inhomogeneous sliding imperfect interface in harmonic materials.

Author

MCARTHUR, D. R. and SUDAK, L. J.

Subjects
*DEFORMATIONS (Mechanics), *BOUNDARY value problems, *TANGENTIAL coordinates, *ANALYTIC functions, *STRAINS & stresses (Mechanics)
Abstract

In the following study we rigorously analyze the problem of a circular inclusion with inhomogeneous imperfect sliding interface in finite deformation of harmonic materials. The work begins by defining the inhomogeneous sliding boundary conditions characterized by two interface parameters corresponding to the normal and tangential coordinate directions (with respect to the interface boundary curve), respectively. Then, through the process of analytic continuation the problem is eventually reduced to the determination of a single analytic function given by an ordinary differential equation with variable coefficients. A specific example is selected to illustrate the method. The effects of the circumferential variation of the interface parameter on the mean stress at the interface and the average mean stress in the inclusion are discussed. [ABSTRACT FROM AUTHOR]

Published
2018

28. 3,3-Diphenyl-6-(p-toluenesulfonyl)-6-aza-3-silabicyclo[3.1.0]hexane.

Author

Matthews JL, McArthur DR, Muir KW, and White DN

Abstract

The title compound, C23H23NO2SSi, at 100 K adopts a boat conformation which brings the C-H bond of an axial phenyl substituent into proximity [C...N = 3.376 (1) A] with the aziridine lone pair. The factors which favour this conformation for bicyclo[3.1.0]hexane systems are considered.

Published
2001
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31. Individualized impression trays from existing complete dentures.

Author

McArthur DR

Subjects
Humans, Dental Impression Technique instrumentation, Denture Bases, Denture, Complete
Abstract

This technique can be used to avoid the making of preliminary impressions for complete dentures in patients with abnormally small oral openings. With this method, the patient must have existing dentures, and the border extensions must be adequate to serve as individualized impression trays.

Published
1980
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32. Management of the mucolabial fold when developing impressions for complete dentures.

Author

McArthur DR

Subjects
Denture Bases, Denture Design, Humans, Dental Impression Technique instrumentation, Denture, Complete, Lip anatomy & histology, Mouth Mucosa anatomy & histology
Abstract

All patients have loose nonkeratinized unattached mucosa in the anterior labial vestibule. The degree of possible distortion varies with each patient and with different recording techniques. Some distortion is possible in all patients. Common errors made when manipulating this tissue during impression procedures for complete dentures have been described. An effort to compensate for the errors in the finished denture will not correct them. Manipulation of the mucolabial fold must be done correctly during the border molding procedure. If not, the only recourse may be to reline the denture, and care should be taken not to repeat the errors.

Published
1985
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33. Fabrication of full coverage restorations for existing removable partial dentures.

Author

McArthur DR

Subjects
Crowns, Dental Abutments, Denture Design, Denture, Partial, Removable
Abstract

A technique has been described for the fabrication of full coverage restorations for existing removable partial dentures. This method requires that the patient be deprived of the removable prosthesis during the fabrication of the fixed replacement unit. Clearly, this may not always be possible or desirable, however, when it is possible, the end result outweighs the inconvenience to the patient.

Published
1984
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35. Maxillary segmental osteotomies for mandibular removable partial denture patients.

Author

McArthur DR and Turvey TA

Subjects
Adult, Dental Restoration, Permanent, Denture Design, Female, Humans, Mandible, Osteotomy adverse effects, Root Canal Therapy, Tooth Extraction, Denture, Partial, Removable, Malocclusion surgery, Maxilla surgery, Osteotomy methods
Abstract

The posterior maxillary osteotomy is a versatile and useful treatment alternative for a variety of dentofacial conditions. Its place in the management of bilateral distal-extension removable partial denture construction has been described along with a report of treatment of a patient.

Published
1979
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36. Stabilized occlusion rims for small interarch spaces.

Author

McArthur DR

Subjects
Humans, Tooth, Artificial, Vertical Dimension, Denture Bases, Denture Design, Denture, Complete
Abstract

This article describes three methods for fabricating stabilized occlusion rims for close interarch spaces. To utilize these methods, the dentist must anticipate the lack of space and request that the rims be fabricated by one of the methods outlined prior to the maxillomandibular relations appointment.

Published
1979
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37. The trial-packed, heat-processed spare complete denture.

Author

McArthur DR and James WE

Subjects
Dental Impression Technique, Denture Bases, Hot Temperature, Humans, Time Factors, Dental Casting Technique, Denture, Complete economics
Abstract

A method has been described to make a second set of complete dentures for a patient. The second set of dentures will reflect relined tissue contours, use of manufactured artificial teeth, and trial-packed, heat-processed denture bases. The new dentures are of equal quality to the original dentures.

Published
1985
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38. Determining approximate size of maxillary anterior artificial teeth when mandibular anterior teeth are present. Part I: Size relationship.

Author

McArthur DR

Subjects
Dental Arch anatomy & histology, Denture Design, Female, Humans, Male, Mandible anatomy & histology, Maxilla anatomy & histology, Odontometry instrumentation, Cuspid anatomy & histology, Incisor anatomy & histology, Tooth, Artificial
Abstract

Three methods were used to obtain a ratio of the maxillary to the mandibular anterior teeth, with results of 1.29, 1.30, and 1.31. It can be concluded that a ratio of 1.30 is sufficient to determine the approximate width of the six maxillary anterior teeth when given the size of the mandibular natural anterior teeth. This ratio should be valid to select a maxillary denture mold of sufficient width mesiodistally to obtain a Class I canine relationship. However, the ratio may need a slight adjustment to compensate for the intentional disocclusion of the maxillary denture teeth with the natural mandibular teeth. In Fig. 1 the canine to canine measurement of the mandibular anterior teeth was 35 mm; when multiplied by a factor of 1.30, a maxillary measurement of 45.5 mm is obtained. The denture teeth were to be set with approximately 1 mm of horizontal overjet and 1 mm of vertical overlap (Fig. 2), therefore a slightly larger mold of 48.5 mm was chosen (Fig. 3). This maxillary mold produced a Class I canine relationship (Fig. 4). The 48.5 mm ratio of the chosen maxillary mold to the mandibular measurement of 35 mm yielded a ratio of 1.38. When this ratio of 1.38 is applied, the desired prosthetic mold is not always available. There is a range of acceptability above and below the desired ratio.(ABSTRACT TRUNCATED AT 250 WORDS)

Published
1985
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39. A determination of the minimum radiopacification necessary for radiographic detection of an aspirated or swallowed object.

Author

McArthur DR and Taylor DF

Subjects
Aluminum, Copper, Denture Bases, Humans, Resins, Plant, Densitometry standards, Esophagus diagnostic imaging, Foreign Bodies diagnostic imaging, Lung diagnostic imaging, Radiography standards
Abstract

It was hoped that it might be possible to establish some standard or starting point which could be used by future investigators to judge adequate levels of radiopacity of radiopaque denture-base materials. Aluminum and copper were used to define a suitable radiopacity scale. The scale was represented by two sets of specimens--one of regular outline and uniform thickness, the other of irregular shape and tapering thickness. Radiographs of the chest and abdominal regions of a cadaver were exposed, with the specimens placed on the film side and then on the opposite side of the cadaver. The results showed that it was more difficult to locate the beveled irregular specimens, that there was little difference between the chest and the abdomen with respect to ease of locating the same objects, and that the closer an object is to the film the easier it is to locate. For 95 per cent observability, an object should have a level of radiopacity at least equal to that produced by 0.20 mm. of copper.

Published
1975
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43. Metal posterior teeth for the chronic bruxing patient.

Author

McArthur DR

Subjects
Chronic Disease, Denture Design, Humans, Surface Properties, Bruxism, Dental Alloys, Denture, Partial, Removable, Molar, Tooth, Artificial
Abstract

This article outlines a technique for the fabrication of metal posterior tooth blocks which have tooth-colored facings of acrylic resin or dental porcelain. The technique is applicable for all removable dental restorations but has special applicability for the chronic bruxing patient who has a natural dentition opposing the removable partial denture.

Published
1978
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45. Determination of approximate size of maxillary anterior denture teeth when mandibular anterior teeth are present. Part III: Relationship of maxillary to mandibular central incisor widths.

Author

McArthur DR

Subjects
Female, Humans, Male, Models, Dental, Odontometry, Incisor anatomy & histology, Mandible, Maxilla, Tooth, Artificial
Abstract

The average width of a natural maxillary central incisor is 8.92 mm. This value is determined from the results of three studies of natural dentitions. The average width of a mandibular central incisor is 5.5 mm. The average ratio produced by dividing the average maxillary central incisor width by the average mandibular incisor width is 1.62. The factor of 1.5 times the width of a mandibular central incisor produces a maxillary central incisor width that is too narrow. The width of a mandibular central incisor plus half the width of the mandibular lateral incisor also produces a maxillary central incisor width that is too narrow. There may be a tendency to undersize the maxillary prosthetic dentition. The ratio of 1.62 can be used to select the appropriate width for a missing maxillary central incisor when given the width of the mandibular central incisor. This ratio of 1.62 is also valuable to verify the dimension of a selected artificial maxillary central incisor when the patient complains that the tooth is too large. If substitutions or adjustments are made in the mold, the desired canine-to-canine measurement produced by the ratio range of 1.3 to 1.38 reported in Parts I and II of this study should be maintained.

Published
1985
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