220 results on '"Weikel, W"'
Search Results
52. Prognostische Bedeutung einer Diabeteserkrankung beim Endometriumkarzinom
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Steiner, E., primary, Eicher, O., additional, Hofmann, M., additional, Weikel, W., additional, Schmidt, M., additional, Pilch, H., additional, and Knapstein, P.-G., additional
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- 2001
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53. Intron variants of the p53 gene are associated with increased risk for ovarian cancer but not in carriers of BRCA1 or BRCA2 germline mutations
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Wang-Gohrke, S, primary, Weikel, W, additional, Risch, H, additional, Vesprini, D, additional, Abrahamson, J, additional, Lerman, C, additional, Godwin, A, additional, Moslehi, R, additional, Olipade, O, additional, Brunet, J-S, additional, Stickeler, E, additional, Kieback, D G, additional, Kreienberg, R, additional, Weber, B, additional, Narod, S A, additional, and Runnebaum, I B, additional
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- 1999
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54. Plastisch rekonstruktive Operationen an Vulva und Vagina
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Knapstein, P. G., primary, Mahlke, M., additional, Weikel, W., additional, and Hofmann, M., additional
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- 1999
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55. Riesiger Adenomatoid-Tumor des Uterus
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Pilch, H., primary, Weikel, W., additional, Schäffer, U., additional, Brockerhoff, P., additional, and Knapstein, P. G., additional
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- 1999
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56. Erfassung angiogeneseabhängiger Parameter mittels funktioneller MRT: Korrelation mit der Histomorphologie sowie Abklärung der klinischen Relevanz als Prognosefaktor am Beispiel des Zervixkarzinomes
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Hawighorst, H., primary, Schaeffer, U., additional, Knapstein, P., additional, Knopp, M., additional, Weikel, W., additional, Schönberg, S., additional, Essig, M., additional, and Kaick, G., additional
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- 1998
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57. Risk assessment, early diagnosis and gene replacement therapy: p53 to attack current problems in the management of ovarian cancer
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RUNNEBAUM, I, primary, WANGGOHRKE, S, additional, STICKEIER, E, additional, MOEBUS, V, additional, GRILL, H, additional, VOGL, F, additional, WEIKEL, W, additional, BRUMM, C, additional, KREIENBERG, R, additional, and KIEBACK, D, additional
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- 1998
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58. Cervical carcinoma: comparison of standard and pharmacokinetic MR imaging.
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Hawighorst, H, primary, Knapstein, P G, additional, Weikel, W, additional, Knopp, M V, additional, Schaeffer, U, additional, Brix, G, additional, Essig, M, additional, Hoffmann, U, additional, Zuna, I, additional, Schönberg, S, additional, and van Kaick, G, additional
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- 1996
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59. Cytokeratin and Vimentin Expression in Primary and Recurrent Carcinoma of the Vulva
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Weikel, W., primary, Moll, R., additional, Brumm, C., additional, Wilkens, C., additional, and Knapstein, P. G., additional
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- 1996
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60. Assessment of myometrial infiltration and preoperative staging by transvaginal ultrasound in patients with endometrial carcinoma
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Weber, G., primary, Merz, E., additional, Bahlmann, F., additional, Mitze, M., additional, Weikel, W., additional, and Knapstein, P. G., additional
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- 1995
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61. Einfluß der Proliferationsrate auf den Krankheitsverlauf von nodalnegativen Mammakarzinomen
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Mitze, Margarete, primary, Weikel, W., additional, Brumm, C., additional, Lippold, R., additional, and Knapstein, P., additional
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- 1995
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62. Immunhistochemischer Nachweis und prognostische Bedeutung von p 53 im Primärtumor von Mammakarzinompatientinnen
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Beck, T., primary, Weller, E., additional, Weikel, W., additional, Brumm, C., additional, Wilkens, C., additional, and Knapstein, P.-G., additional
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- 1995
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63. Myoperitoneale Composite Flaps: Ein neues operatives Prinzip zur Vaginalrekonstruktion
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Höckel, M., primary, Konerding, M., additional, Baußmann, Evmarie, additional, Weikel, W., additional, Wilkens, Claudia, additional, and Knapstein, P., additional
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- 1995
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64. Usefulness of Immunohistochemical Staining for p53 in the Prognosis of Breast Carcinomas: Correlations with Established Prognosis Parameters and with the Proliferation Marker, MIB-1
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Beck, T., primary, Weller, E.E., additional, Weikel, W., additional, Brumm, C., additional, Wilkens, C., additional, and Knapstein, P.G., additional
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- 1995
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65. Neuere Prognosefaktoren des Vulvakarzinoms: Histologische, Immunhistochemische und durchflußzytometrische Untersuchungen
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Weikel, W., primary, Beck, T., additional, Moll, R., additional, Brumm, C., additional, and Knapstein, P.G., additional
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- 1995
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66. Establishment of new ovarian and colon carcinoma cell lines: differentiation is only possible by cytokeratin analysis
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Möbus, VJ, primary, Moll, R, additional, Gerharz, CD, additional, Kieback, DG, additional, Weikel, W, additional, Hoffmann, G, additional, and Kreienberg, R, additional
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- 1994
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67. Vergleich zwischen histologischem Grading und Kerngrading bei Ovarialkarzinomen
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Weikel, W., primary, Mitze, M., additional, Brumm, C., additional, and Beck, T., additional
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- 1993
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68. Nachweis des c-erbB-2 Onkoproteins im Serum von Patientinnen mit Mammakarzinomen
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Mitze, M., primary, Kreienberg, R., additional, Weikel, W., additional, and Beck, T., additional
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- 1993
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69. Untersuchung zur Häufigkeit konnataler Infektionen*
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Friese, K., primary, Beichert, M., additional, Hof, H., additional, Weikel, W., additional, Falke, D., additional, Sickinger, R., additional, and Melchert, F., additional
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- 1991
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70. Die hintere Exenteration mit plastischer Wiederherstellung beim fortgeschrittenen Vulvakarzinom*
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Weikel, W., primary, Güldütuna, S., additional, Knapstein, P., additional, and Mitze, M., additional
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- 1991
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71. Plazentareifestand „am Termin“ und funktionelle Plazentaleistung: CTG-Veränderungen in Abhängigkeit vom histologischen Nachweis plazentarer Reifungsreserven
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Beck, T., primary, Weber, G., additional, and Weikel, W., additional
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- 1991
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72. Klinische Verlaufsuntersuchungen zur prognostischen Bedeutung der immunhistochemischen Östrogenrezeptorbestimmung am Mammakarzinom (ER-ICA®)
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Beck, Th., primary, Finger, C., additional, Weikel, W., additional, Mitze, M., additional, and Kreienberg, R., additional
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- 1990
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73. Bedeutung des NEU-Proteins für die Prognose von Mammakarzinomen
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Mitze, Margarete, primary, Beck, T., additional, Weikel, W., additional, Rosenthal, H., additional, and Knapstein, P.-G., additional
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- 1990
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74. Plazentainsuffizienz bei Gestose: Morphometrische Untersuchungen zur Reifung und Differenzierung der Resorptionszotten.
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Beck, Th., Rosenthal, H., and Weikel, W.
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- 1987
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75. Plastisch-rekonstruktive Vulvachirurgie - Ergebnisse und Komplikationen
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Weikel, W., Schmidt, M., Steiner, E., Knapstein, P. G., and Kölbl, H.
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- 2006
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76. Stereotaktische Vakuumbiopsie der Brust - Eine Analyse von 166 Fällen
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Weikel, W., Hofmann, M., Steiner, E., Bohrer, M., and Layer, G.
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- 2004
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77. Die immunhistochemische Wachstumsfraktion (Ki-67) von Mammakarzinomen: Beziehungen zur Tumorausdehnung, Tumormorphologie und Rezeptortestung
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Weikel, W., primary, Beck, Th., additional, Rosenthal, H., additional, and Herzog, R., additional
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- 1989
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78. Current Approaches to the Management of Sentinel Node Procedures in Early Vulvar Cancer in Germany: A Web-Based Nationwide Analysis of Practices.
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Schwab R, Stewen K, Bührer TL, Schmidt MW, van der Ven J, Anic K, Linz VC, Hamoud BH, Brenner W, Peters K, Heimes AS, Almstedt K, Krajnak S, Weikel W, Battista MJ, Dannecker C, and Hasenburg A
- Abstract
Background: Lymph node involvement is the most important prognostic factor for recurrence and survival in vulvar cancer. Sentinel node (SN) procedure can be offered in well-selected patients with early vulvar cancer. This study aimed to assess current management practices with respect to the sentinel node procedure in women with early vulvar cancer in Germany., Methods: A Web-based survey was conducted. Questionnaires were e-mailed to 612 gynecology departments. Data were summarized as frequencies and analyzed using the chi-square test., Results: A total of 222 hospitals (36.27%) responded to the invitation to participate. Among the responders, 9.5% did not offer the SN procedure. However, 79.5% evaluated SNs by ultrastaging. In vulvar cancer of the midline with unilateral localized positive SN, 49.1% and 48.6% of respondents, respectively, would perform ipsilateral or bilateral inguinal lymph node dissection. Repeat SN procedure was performed by 16.2% of respondents. For isolated tumor cells (ITCs) or micrometastases, 28.1% and 60.5% of respondents, respectively, would perform inguinal lymph node dissection, whereas 19.3% and 23.8%, respectively, would opt for radiation without further surgical intervention. Notably, 50.9% of respondents would not initiate any further therapy and 15.1% would opt for expectant management., Conclusions: The majority of German hospitals implement the SN procedure. However, only 79.5% of respondents performed ultrastaging and only 28.1% were aware that ITC may affect survival in vulvar cancer. There is a need to ensure that the management of vulvar cancer follows the latest recommendations and clinical evidence. Deviations from state-of-the-art management should only be after a detailed discussion with the concerned patient.
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- 2023
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79. Discordance of HER2-Low between Primary Tumors and Matched Distant Metastases in Breast Cancer.
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Almstedt K, Krauthauser L, Kappenberg F, Wagner DC, Heimes AS, Battista MJ, Anic K, Krajnak S, Lebrecht A, Schwab R, Brenner W, Weikel W, Rahnenführer J, Hengstler JG, Roth W, Hasenburg A, Stewen K, and Schmidt M
- Abstract
We examined differences in HER2 expression between primary tumors and distant metastases, particularly within the HER2-negative primary breast cancer cohort (HER2-low and HER2-zero). The retrospective study included 191 consecutive paired samples of primary breast cancer and distant metastases diagnosed between 1995 and 2019. HER2-negative samples were divided into HER2-zero (immunohistochemistry [IHC] score 0) and HER2-low (IHC score 1+ or 2+/in situ hybridization [ISH]-negative). The main objective was to analyze the discordance rate between matched primary and metastatic samples, focusing on the site of distant metastasis, molecular subtype, and de novo metastatic breast cancer. The relationship was determined by cross-tabulation and calculation of Cohen's Kappa coefficient. The final study cohort included 148 paired samples. The largest proportion in the HER2-negative cohort was HER2-low [primary tumor 61.4% ( n = 78), metastatic samples 73.5% ( n = 86)]. The discordance rate between the HER2 status of primary tumors and corresponding distant metastases was 49.6% ( n = 63) (Kappa -0.003, 95%CI -0.15-0.15). Development of a HER2-low phenotype occurred most frequently ( n = 52, 40.9%), mostly with a switch from HER2-zero to HER2-low ( n = 34, 26.8%). Relevant HER2 discordance rates were observed between different metastatic sites and molecular subtypes. Primary metastatic breast cancer had a significantly lower HER2 discordance rate than secondary metastatic breast cancer [30.2% (Kappa 0.48, 95%CI 0.27-0.69) versus 50.5% (Kappa 0.14, 95% CI -0.03-0.32)]. This highlights the importance of evaluating potentially therapy-relevant discordance rates between a primary tumor and corresponding distant metastases.
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- 2023
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80. Impact of perioperative red blood cell transfusion, anemia of cancer and global health status on the prognosis of elderly patients with endometrial and ovarian cancer.
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Anic K, Schmidt MW, Schmidt M, Krajnak S, Löwe A, Linz VC, Schwab R, Weikel W, Brenner W, Westphalen C, Rissel R, Hartmann EK, Conradi R, Hasenburg A, and Battista MJ
- Abstract
Introduction: Perioperative red blood cell (RBC) transfusions have been associated with increased morbidity and worse oncological outcome in some solid neoplasms. In order to elucidate whether RBC transfusions themselves, the preoperative anemia of cancer (AOC), or the impaired global health status might explain this impact on patients with endometrial cancer (EC) or ovarian cancer (OC), we performed a retrospective, single-institution cohort study., Materials and Methods: Women older than 60 years with EC or OC were included. The influence of RBC transfusions, AOC, and frailty status determined by the G8 geriatric screening tool (G8 score), as well as the clinical-pathological cancer characteristics on progression-free survival (PFS) and overall survival (OS), was determined by using the Kaplan-Meier method and the Cox regression analyses., Results: In total, 263 patients with EC (n = 152) and OC (n = 111) were included in the study. Patients with EC receiving RBC transfusions were faced with a significantly shorter 5-year PFS (79.8% vs. 26.0%; p < 0.001) and 5-year OS (82.6% vs. 25.7%; p < 0.001). In multivariable analyses, besides established clinical-pathological cancer characteristics, the RBC transfusions remained the only significant prognostic parameter for PFS (HR: 1.76; 95%-CI [1.01-3.07]) and OS (HR: 2.38; 95%-CI [1.50-3.78]). In OC, the G8 score stratified the cohort in terms of PFS rates (G8-non-frail 53.4% vs. G8-frail 16.7%; p = 0.010) and AOC stratified the cohort for 5-year OS estimates (non-anemic: 36.7% vs. anemic: 10.6%; p = 0.008). Multivariable Cox regression analyses determined the G8 score and FIGO stage as independent prognostic factors in terms of PFS (HR: 2.23; 95%-CI [1.16-4.32] and HR: 6.52; 95%-CI [1.51-28.07], respectively). For OS, only the TNM tumor stage retained independent significance (HR: 3.75; 95%-CI [1.87-7.53])., Discussion: The results of this trial demonstrate the negative impact of RBC transfusions on the prognosis of patients with EC. Contrastingly, the prognosis of OC is altered by the preoperative global health status rather than AOC or RBC transfusions. In summary, we suggested a cumulatively restrictive transfusion management in G8-non-frail EC patients and postulated a more moderate transfusion management based on the treatment of symptomatic anemia without survival deficits in OC patients., Competing Interests: KA reports personal fees from Eisai, Roche, MSD. MWS reports holding a patent WO 2021/176091 A1 not related to this study. SK received speaker Honoria, research funding and travek reimbursement from Vovartis Pharma GmbH Germany. MS reports personal fees from AstraZeneca, BioNTech, Daiichi Sankyo, Eisai, Lilly, MSD, Novartis, Pantarhei Bioscience, Pfizer, Roche, and SeaGen outside the submitted work. Institutional research funding from AstraZeneca, BioNTech, Eisai, Genentech, German Breast Group, Novartis, Palleos, Pantarhei Bioscience, Pierre Fabre, and SeaGen. In addition, MS has a patent for EP 2390370 B1 and a patent for EP 2951317 B1issued. RS reports honoraria and expenses from Roche Pharma AG and AstraZeneca GmbH. AH reports honoraria and expenses from AstraZeneca, FBA Frauenärzte BundesAkademie GmbH, KlarigoVerlag, MedConcept, Med public GmbH, Med update GmbH, Medicultus, Pfizer, Promedicis GmbH, Pierre Fabre Pharma GmbH, Softconsult, Roche Pharma AG, Streamedup! GmbH, Tesaro Bio Germany GmbH. I am consultant to PharmaMar, Promedicis GmbH, Pierre Fabre Pharma GmbH, Roche Pharma AG and Tesaro Bio Germany GmbH. I have received funded research from Celgene. MB reports honoraria and expenses from Pharma Mar, Astra Zeneca, Tesaro, GSK, Roche, Clovis Oncology. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Anic, Schmidt, Schmidt, Krajnak, Löwe, Linz, Schwab, Weikel, Brenner, Westphalen, Rissel, Hartmann, Conradi, Hasenburg and Battista.)
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- 2022
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81. Long-term prognostic significance of HER2-low and HER2-zero in node-negative breast cancer.
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Almstedt K, Heimes AS, Kappenberg F, Battista MJ, Lehr HA, Krajnak S, Lebrecht A, Gehrmann M, Stewen K, Brenner W, Weikel W, Rahnenführer J, Hengstler JG, Hasenburg A, and Schmidt M
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- Disease-Free Survival, Female, Humans, Prognosis, Receptor, ErbB-2 metabolism, Retrospective Studies, Breast Neoplasms pathology
- Abstract
Background: Recently, novel antibody--drug conjugates (ADCs) showed clinical activity in a subset of advanced human epidermal growth factor receptor 2 (HER2)-negative patients. We investigated the prognostic significance of HER2-low and HER2-zero tumours., Patients and Methods: The retrospective cohort study included 410 consecutive node-negative breast cancer patients without adjuvant systemic therapy treated between 1985 and 2000 (median follow-up: 16.73 [IQR 8.58-23.45] years). 351 (85.6%) were HER-2 negative and subdivided into HER2-zero (immunohistochemistry [IHC] score 0) and HER2-low (IHC score 1+ or 2+/in situ hybridisation [ISH]-negative). HER2 gene expression was available in 170 (48.4%) patients. Differences in HER2 status for immunohistochemistry, gene expression and clinico-pathologic parameters were assessed using Fisher's exact test, Pearson's correlation and Mann-Whitney test. Prognosis was investigated using the Kaplan-Meier method and Cox regression analyses., Results: Of the 351 HER2-negative patients, 198 (56.4%) had HER2-low tumours and 153 (43.6%) were HER2-zero. Significant differences between HER2-zero and HER2-low tumours were found in histologic grading (P = 0.001), Ki-67 (P = 0.013) and HER2 gene expression (P = 0.002). HER2-low patients had significantly longer disease-free survival (DFS) (15-year rate: 67.5% [95% CI 61.0-74.7] vs. 47.3% [95% CI 39.9-56.1], P < 0.001) and overall survival (OS) (15-year rate: 75.4% [95% CI 69.4-81.9] vs. 66.8% [95% CI 59.5-74.9], P = 0.009). The OS difference was observed in hormone receptor (HR)-positive (P = 0.039) but not HR-negative (P = 0.086) tumours. The results of multivariable analyses confirmed the independent prognostic significance of HER2 status (DFS: HR, 0.546; 95% CI, 0.402-0.743; P < 0.001; OS: HR, 0.653; 95% CI, 0.458-0.932; P = 0.019)., Conclusion: HER2-low patients had a better survival than HER2-zero patients., Competing Interests: Conflict of interest statement The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: K. Almstedt received speaker honoraria from Roche Pharma AG, Pfizer Pharma GmbH and AstraZeneca. A.-S. Heimes received speaker honoraria from Pfizer Pharma GmbH and honoraria from Medupdate GmbH. M. J. Battista received honoraria and expenses from Astra Zeneca, Clovis Oncology, GSK, MSD, Pharma Mar, Roche and Tesaro Bio Germany GmbH. He is consultant to Eisai, GSK, MSD, Pharma Mar, Roche Pharma AG and Tesaro Bio Germany GmbH. He received funded research from Astra Zeneca, Clovis Oncology, MSD and Novartis. S. Krajnak received speaker honoraria from Roche Pharma AG and Novartis Pharma GmbH Germany, research funding from Novartis Pharma GmbH Germany and travel reimbursement from PharmaMar and Novartis Pharma GmbH Germany. M. Gehrmann is an employee of Bayer AG A. Hasenburg received honoraria from AstraZeneca, Celegen, MedConcept Gm, Med update GmbH, Medicultus, Pfizer, Promedicis GmbH, Pierre Fabre, Softconsult, Roche Pharma AG, Streamedup!GmbH and Tesaro Bio Germany GmbH. She is a member of the advisory board of PharmaMar, Promedicis GmbH, Pierre Fabre Pharma GmbH, Roche Pharma AG and Tesaro Bio Germany GmbH. She received research funding from Celgene. M. Schmidt reports personal fees from AstraZeneca, BioNTech, Daiichi Sankyo, Eisai, Lilly, MSD, Novartis, Pantarhei Bioscience, Pfizer, Roche, and SeaGen outside the submitted work. Institutional research funding from AstraZeneca, BioNTech, Eisai, Genentech, German Breast Group, Novartis, Palleos, Pantarhei Bioscience, Pierre Fabre, and SeaGen. In addition, Marcus Schmidt has a patent for EP 2390370 B1 issued and a patent for EP 2951317 B1 issued. All other authors (A. Lebrecht, K. Stewen, J.-G. Hengstler, F. Kappenberg, J. Rahnenführer, H-A. Lehr, W. Brenner, W. Weikel) declare that they have no conflict of interest., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
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- 2022
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82. Diagnosis, Therapy and Follow-up of Vaginal Cancer and Its Precursors. Guideline of the DGGG and the DKG (S2k-Level, AWMF Registry No. 032/042, October 2018).
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Schnürch HG, Ackermann S, Alt-Radtke CD, Angleitner L, Barinoff J, Beckmann MW, Böing C, Dannecker C, Fehm T, Gaase R, Gass P, Gebhardt M, Gieseking F, Günthert A, Hack CC, Hantschmann P, Horn LC, Koch MC, Letsch A, Mallmann P, Mangold B, Marnitz S, Mehlhorn G, Paradies K, Reinhardt MJ, Tholen R, Torsten U, Weikel W, Wölber L, and Hampl M
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Purpose This is an official guideline, published and coordinated by the Gynecological Oncology Working Group (AGO) of the German Cancer Society (DKG) and the German Society for Gynecology and Obstetrics (DGGG). Vaginal cancers are rare tumors, which is why there is very little evidence on these tumors. Knowledge about the optimal clinical management is limited. This first German S2k guideline on vaginal cancer has aimed to compile the most current expert knowledge and offer new recommendations on the appropriate treatment as well as providing pointers about individually adapted therapies with lower morbidity rates than were previously generally available. The purpose of this guideline is also to set up a register to record data on treatment data and the course of disease as a means of obtaining evidence in future. Methods The present S2k guideline was developed by members of the Vulvar und Vaginal Tumors Commission of the AGO in an independently moderated, structured, formal consensus process and the contents were agreed with the mandate holders of the participating scientific societies and organizations. Recommendations To optimize the daily care of patients with vaginal cancer: 1. Monitor the spread pattern; 2. Follow the step-by-step diagnostic workup based on initial stage at detection; 3. As part of individualized clinical therapeutic management of vaginal cancer, follow the sentinel lymph node protocol described here, where possible; 4. Participate in the register study on vaginal cancer., (© Thieme Medical Publishers.)
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- 2019
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83. Prognostic effect of epithelial cell adhesion molecule overexpression in untreated node-negative breast cancer.
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Schmidt M, Hasenclever D, Schaeffer M, Boehm D, Cotarelo C, Steiner E, Lebrecht A, Siggelkow W, Weikel W, Schiffer-Petry I, Gebhard S, Pilch H, Gehrmann M, Lehr HA, Koelbl H, Hengstler JG, and Schuler M
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- Adult, Aged, Aged, 80 and over, Biomarkers, Tumor, Breast Neoplasms mortality, Breast Neoplasms pathology, Drug Delivery Systems, Epithelial Cell Adhesion Molecule, Female, Humans, Lymphatic Metastasis, Middle Aged, Neoplasms, Hormone-Dependent, Prognosis, Antigens, Neoplasm metabolism, Breast Neoplasms metabolism, Cell Adhesion Molecules metabolism
- Abstract
Purpose: Epithelial cell adhesion molecule (Ep-CAM) recently received increased attention not only as a prognostic factor in breast cancer but also as a potential target for immunotherapy. We examined Ep-CAM expression in 402 consecutive node-negative breast cancer patients with long-term follow-up not treated in the adjuvant setting., Experimental Design: Ep-CAM expression was evaluated by immunostaining. Its prognostic effect was estimated relative to overexpression/amplification of HER-2, histologic grade, tumor size, age, and hormone receptor expression., Results: Ep-CAM status was positive in 106 (26.4%) patients. In multivariate analysis, Ep-CAM status was associated with disease-free survival independent of age, pT stage, histologic grade, estrogen receptor (ER), progesterone receptor (PR), as well as HER2 status (P = 0.028; hazard ratio, 1.60; 95% confidence interval, 1.05-2.44). Recently, so-called triple-negative (HER-2, ER, and PR) breast cancer has received increased attention. We noticed a similar association of Ep-CAM with disease-free survival in the triple-negative group as for the entire cohort., Conclusion: In this study of untreated breast cancer patients, Ep-CAM overexpression was associated with poor survival in the entire cohort and in the subgroup of triple-negative breast cancer. This suggests that Ep-CAM may be a well-suited target for specific therapies particularly in HER-2-, ER-, and PR-negative tumors.
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- 2008
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84. Reconstructive plastic surgery in the treatment of vulvar carcinomas.
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Weikel W, Schmidt M, Steiner E, Knapstein PG, and Koelbl H
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- Adult, Aged, Aged, 80 and over, Female, Gynecologic Surgical Procedures, Humans, Middle Aged, Neoplasm Recurrence, Local surgery, Surgical Flaps, Survival Analysis, Treatment Outcome, Vulvar Neoplasms mortality, Plastic Surgery Procedures methods, Vulvar Neoplasms surgery, Wound Healing
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Objective: The results obtained using plastic surgery reconstruction in 207 patients with a primary or recurrent vulvar carcinoma were analyzed with regard to the surgical procedures applied, pre-treatment and post-operative findings, along with the long-term oncological disease course., Study Design: Standardized data concerning the surgical procedures applied and clinical factors were collected in a databank and statistically analyzed., Results: The flaps employed were termed either 'local' (cutaneous or fasciocutaneous; n=84) or 'regional' (myocutaneous, n=123). For local flaps, the rate of secondary healing was 31%, dropping to 20% for regional flaps. Such healing disturbances often affected the donor region and did not lead to lasting clinical problems such as stenosis or distortion. Severe disturbances of wound healing (loss of more than 10%) were not observed in local flaps, whereas such problems were encountered in 5.9% of regional flaps. Gluteal thigh flaps were most frequently applied and were also the most successful type of myocutaneous reconstruction. Therapy was selected on an individual basis according to tumor status., Conclusion: Plastic surgery reconstruction broadens the range of operative therapies available for the treatment of vulvar carcinomas, especially those at an advanced stage or recurrent tumors, and leads to a favorable oncological disease course as well as improved cosmetic results.
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- 2008
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85. Surgical therapy of recurrent vulvar cancer.
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Weikel W, Schmidt M, Steiner E, Knapstein PG, and Koelbl H
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- Adult, Aged, Aged, 80 and over, Databases, Factual, Female, Humans, Middle Aged, Prognosis, Survival Analysis, Wound Healing, Carcinoma surgery, Gynecologic Surgical Procedures, Neoplasm Recurrence, Local surgery, Plastic Surgery Procedures, Vulvar Neoplasms surgery
- Abstract
Objective: The success of various surgical interventions in 201 cases with recurrent vulvar carcinoma was examined in the light of patients' pretreatment, surgical therapy, plastic reconstruction, and postoperative disease course., Study Design: A databank of standardized clinical data was analyzed using statistical procedures., Results: Therapy was selected on an individual basis according to tumor status. Recurrence at a site distant from the primary tumor, particularly in the inguinal region, indicated a markedly unfavorable prognosis. In contrast, tumors recurring locally did not exhibit any significant differences. Plastic surgery reconstruction led to improvements with respect to operability, wound healing, and survival., Conclusion: Individualized reconstructive surgery of the vulva leads to good results in patients with recurrent vulvar cancer. To an even greater extent than is the case for primary therapy, plastic surgery enlarges the spectrum of feasible surgical alternatives so that a more favorable oncological outcome and excellent cosmetic results may be expected.
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- 2006
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86. [Plastic reconstructive procedures of vulvar carcinoma: results and complications].
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Weikel W, Schmidt M, Steiner E, Knapstein PG, and Kölbl H
- Subjects
- Adult, Aged, Aged, 80 and over, Female, Humans, Middle Aged, Recurrence, Retrospective Studies, Treatment Outcome, Plastic Surgery Procedures, Vulvar Neoplasms surgery
- Abstract
Purpose: This study describes the results of the plastic reconstructive measures in 207 patients with a primary or a recurrent vulvar cancer. These procedures were analysed in sight of surgical excision, previous therapy, and detailed postoperative results., Methods: All procedures and clinical parameters were recorded standardized in a data bank and analysed using statistical methods., Results: In 123 local (cutaneous or fasciocutaneous) and 84 regional (myocutaneous) flaps we found a primary healing in about 2/3 of the cases. Local flaps exhibited secondary healing in 31 %, regional flaps in 20 %. This often involved the donor sites and generally did not present any permanent problems. Pronounced healing disturbances (necrosis of more than 10 %) was not achieved in local flaps, in regional flaps it aroused in 5.9 %. Gluteal femoral flaps were used most frequently and showing the best results of all myocutaneous flaps. They were comparable with the local reconstructions by a high degree of reliability and healing. In 15 cases a tissue-loss was observed. In these patients, elevated risk factors, certain oncological characteristics and technical problems could be demonstrated., Conclusion: Plastic surgery enlarges the spectrum of operative therapy of vulvar cancer, especially in extensive or recurrent tumors, leading to a favourable oncological outcome and good cosmetic results. Severe healing disturbances are rare and can be controlled.
- Published
- 2006
- Full Text
- View/download PDF
87. Influence of diabetes mellitus and nodal distribution in endometrial cancer and correlation to clinico-pathological prognostic factors.
- Author
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Steiner E, Schmidt M, Weikel W, and Koelbl H
- Subjects
- Acanthoma mortality, Adenocarcinoma mortality, Adult, Aged, Aged, 80 and over, Body Mass Index, Carcinoma, Adenosquamous mortality, Endometrial Neoplasms mortality, Female, Humans, Kaplan-Meier Estimate, Lymph Node Excision, Lymphatic Metastasis, Middle Aged, Multivariate Analysis, Neoplasm Staging, Prognosis, Proportional Hazards Models, Retrospective Studies, Acanthoma pathology, Adenocarcinoma pathology, Carcinoma, Adenosquamous pathology, Diabetes Mellitus epidemiology, Endometrial Neoplasms pathology
- Abstract
Objective: The aim of this study was to describe the relationships between the distribution of nodal disease, clinico-pathological patterns and recurrence and survival in surgically staged cases of endometrial cancer., Methods: Charts were abstracted from patients with endometrial carcinoma from 1985 to 1995. Data on clinicopathologic variables, adjuvant treatment, site of recurrence and survival were collected. The chi square test was used to test associations between variables. The Kaplan-Meier method was used for survival analysis and Cox's proportional hazards model for multiple regression analysis., Results: Sixty-nine out of 181 patients underwent lymph node dissection. Twenty-three had pelvic lymph node dissection, 23 underwent pelvic and paraaortic lymph node dissection and 20 patients had lymph node sampling. The median count of removed lymph nodes was 22.4. Fifty-four lymph node dissections showed negative lymph nodes and in 15 cases there was a minimum of one positive lymph node. Overall survival was in correlation to nodal involvement with a p value of 0.0017. Patients with lymph node involvement showed significantly more recurrence than patients with negative lymph nodes (p = 0.003). The depth of myometrial invasion correlated with lymph node metastasis (p = 0.01) and patients with additional diabetes mellitus showed significantly more nodal involvement (p = 0.02)., Conclusion: Endometrial cancer showed pelvic lymph node (PLN) and paraaortic lymph node (PALN) involvement. Under-diagnosis of the disease might result if there was only a PLN, but with or without PALN involvement there was no significant difference in overall survival or recurrence. There was an univariate correlation between lymph node involvement and diabetes.
- Published
- 2006
88. Long-term prognostic significance of HER-2/neu in untreated node-negative breast cancer depends on the method of testing.
- Author
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Schmidt M, Lewark B, Kohlschmidt N, Glawatz C, Steiner E, Tanner B, Pilch H, Weikel W, Kölbl H, and Lehr HA
- Subjects
- Adult, Aged, Aged, 80 and over, Disease-Free Survival, Female, Follow-Up Studies, Gene Amplification, Humans, Immunohistochemistry, In Situ Hybridization, Fluorescence, Lymphatic Metastasis, Middle Aged, Predictive Value of Tests, Prognosis, Receptor, ErbB-2 analysis, Reproducibility of Results, Breast Neoplasms genetics, Breast Neoplasms pathology, Gene Expression Profiling, Receptor, ErbB-2 biosynthesis
- Abstract
Introduction: The prognostic significance of HER-2/neu in breast cancer is a matter of controversy. We have performed a study in 101 node-negative breast cancer patients with long-term follow-up not treated in the adjuvant setting, and analysed the prognostic significance of immunohistochemistry (IHC) and fluorescence in situ hybridisation (FISH), both separately and in combination, in comparison with traditional prognostic factors., Methods: Overexpression was classified semiquantitatively according to a score (0 to 3+) (HER-2_SCO). FISH was used to analyse HER2/neu amplification (HER-2_AMP). Patients classified 2+ by IHC were examined with FISH for amplification (HER-2_ALG). Patients with 3+ overexpression as well as amplification of HER-2/neu were positive for the combined variable HER2_COM. These variables were compared with tumour size, histological grade and hormone receptor status., Results: HER-2_SCO was 3+ in 20% of all tumours. HER-2_ALG was positive in 22% and amplification (HER-2_AMP) was found in 17% of all tumours. Eleven percent of the tumours showed simultaneous 3+ overexpression and amplification. Only histological grade (relative risk [RR] 3.22, 95% confidence interval [CI] 1.73-5.99, P = 0.0002) and HER-2_AMP (RR 2.47, 95% CI 1.12-5.48, P = 0.026) were significant for disease-free survival in multivariate analysis. For overall survival, both histological grade (RR 3.89, 95% CI 1.77-8.55, P = 0.0007) and HER-2_AMP (RR 3.08, 95% CI 1.24-7.66, P = 0.016) retained their independent significance., Conclusion: The prognostic significance of HER-2/neu in node-negative breast cancer depends on the method of testing: only the amplification of HER-2/neu is an independent prognostic factor for the long-term prognosis of untreated node-negative breast cancer.
- Published
- 2005
- Full Text
- View/download PDF
89. [Stereotactic vacuum-assisted breast biopsy - analysis of 166 cases].
- Author
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Weikel W, Hofmann M, Steiner E, Bohrer M, and Layer G
- Subjects
- Adult, Aged, Breast Diseases pathology, Cell Division, Female, Hematoma pathology, Humans, Mammography, Middle Aged, Stereotaxic Techniques, Biopsy methods, Breast pathology, Breast Neoplasms pathology
- Abstract
Objective: Screening mammography (as planned in Germany) will lead to an increasing number of breast biopsies. The purpose of this study was to determine the promise of directional large core biopsy as a patient-protecting therapeutic method., Material and Methods: 166 vacuum assisted, X-ray-guided biopsy procedures were analysed., Results: Histopathologic examination resulted in 75.8 % benign lesions. Atypical proliferation and noninvasive neoplasia was found in 18.6 %, invasive carcinoma in 5.4 % of the biopsies. Complications were few. Neither skin- or chestwall injuries, nor pain or intraoperative bleeding caused an abortion. Postoperative we found four cases of bleeding, further on in 28.3 % a superficial, in 3 % a larger and deep hematoma, but in total without any operative revision. No infection was diagnosed. In the average 17.2 (8-31) specimens were removed. After excision of 18 probes the definitive histopathologic diagnosis was clear in all cases, also, the microcalcifications were found. The underestimation rate amounted to 3 of 35 cases., Conclusions: This clinical study proves stereotactic vacuum-assisted biopsy as a relieable method for analysing indeterminate mammographically detected breast lesions, which shows lower rates of complications than conventional surgical procedures.
- Published
- 2004
- Full Text
- View/download PDF
90. [Valence of immunohistochemical analysis of endometrial carcinoma biopsy specimen].
- Author
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Steiner E, Weikel W, Bahlmann F, Pilch H, Hofmann M, Schmidt M, and Knapstein PG
- Subjects
- Biopsy standards, Curettage, Endometrial Neoplasms mortality, Female, Follow-Up Studies, Humans, Immunohistochemistry, Menopause, Predictive Value of Tests, Premenopause, Receptors, Estrogen analysis, Receptors, Progesterone analysis, Reproducibility of Results, Retrospective Studies, Survival Analysis, Endometrial Neoplasms pathology, Endometrial Neoplasms surgery
- Abstract
Objective: We compared immunohistological examination of endometrium biopsy specimen with the results of the immunohistological examination of tumor specimen to analyse the valence of this preoperative examination according to the clinico-pathological findings and overall-survival., Material and Method: Between 1985 and 1995 193 women were treated of an endometrial carcinoma at the University hospital Mainz. In this group we evaluated 41 patients with enough preoperative endometrial biopsy material for a retrospective immunohistochemical analysis and complete follow-up data. The materials from diagnostic curettage were stained and analysed for oestrogen and progesterone receptor status and for MiB-1. The results were statistically analysed using Logrank-test for overall survival., Results: The mean follow-up time was 49 months. We found a significant correlation between staining results of oestrogen (p-value = 0.0005) and progesterone (p-value=0.0003) receptor status with overall survival as well as for MiB-1 (p-value=0.05). The correlation of staining results between biopsy specimen results and tumor material from hysterectomy was 84-85 %., Conclusion: These well known prognostic factors are measurable on biopsy specimen material in same quality and high valence as on hysterectomy material.
- Published
- 2002
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- View/download PDF
91. Characterization of a human carcinosarcoma cell line of the ovary established after in vivo change of histologic differentiation.
- Author
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Möbus VJ, Gerharz CD, Weikel W, Merk O, Dreher L, Kreienberg R, and Moll R
- Subjects
- Actins biosynthesis, Animals, Carcinosarcoma genetics, Carcinosarcoma metabolism, Cell Differentiation, Cystadenocarcinoma, Papillary genetics, Cystadenocarcinoma, Papillary metabolism, Cystadenocarcinoma, Papillary pathology, DNA, Neoplasm analysis, DNA, Neoplasm genetics, Female, Humans, Intermediate Filament Proteins biosynthesis, Karyotyping, Keratins biosynthesis, Mice, Mice, Nude, Middle Aged, Neoplasm Recurrence, Local pathology, Neoplasm Transplantation, Ovarian Neoplasms genetics, Ovarian Neoplasms metabolism, Carcinosarcoma pathology, Ovarian Neoplasms pathology, Tumor Cells, Cultured
- Abstract
Objectives: Cell lines are valuable in vitro models for clinical and basic research. Most ovarian cancer cell lines described are serous cystadenocarcinomas or poorly differentiated adenocarcinomas. The establishment of ovarian cancer cell lines with rare histologic differentiation is especially of interest. We describe the establishment of a carcinosarcoma cell line of the ovary after in vivo selection., Methods: The cell line OV-MZ-22 was established from a solid tumor mass in the upper abdomen. At the time of establishment, the patient underwent secondary debulking and was pretreated with six cycles of cis-platinum/epirubicin/cyclophosphamide. Features of the cell line studied included morphology, ultrastructure, heterotransplantation, chromosome analysis, and analysis of intermediate filament proteins and actins by immunocytochemistry., Results: The first histologic report of the patient described a papillary cystadenocarcinoma, which changed to a carcinosarcoma with predominantly sarcomatous differentiation at secondary debulking. This cell line is aneuploid and shows no expression of the tumor-associated antigens CA-125 and CEA, but an overexpression of MDR-1, lung resistance protein, p53, and topoisomerase I and II, but not of multidrug-resistance-associated protein. The cell line did not give rise to transplant tumors in nude mice. The histologic and immunocytochemical comparison of the primary and the relapsed tumor proved evidence of an in vivo change of differentiation from predominantly papillary cystadenocarcinoma to carcinosarcoma. Morphological characteristics and intermediate filament pattern underlined the sarcomatous differentiation and origin of this cell line. The differentiation phenotype of OV-MZ-22 cells is that of smooth-muscle cells., Conclusion: The change of histologic differentiation was apparently due to a selection process caused by platinum-containing chemotherapy. The origin of the cell line and its rarity make this new line an appropriate tool for further investigation.
- Published
- 2001
- Full Text
- View/download PDF
92. [Endometrial carcinoma in patients with diabetes mellitus].
- Author
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Steiner E, Eicher O, Hofmann M, Weikel W, Schmidt M, Pilch H, and Knapstein PG
- Subjects
- Aged, Body Mass Index, Diabetes Complications, Diabetes Mellitus pathology, Endometrial Neoplasms complications, Endometrial Neoplasms pathology, Endometrium pathology, Female, Germany, Humans, Middle Aged, Neoplasm Invasiveness, Neoplasm Staging, Prognosis, Survival Rate, Diabetes Mellitus mortality, Endometrial Neoplasms mortality
- Abstract
Objective: The purposes of this study were to analyze the relationship between clinical and pathological risk factors in endometrial cancer and additional diabetes mellitus and to clarify the correlation between additional diabetes mellitus and survival of patients with this disease. -, Material and Methods: This analyze included 181 patients with endometrial carcinoma who were treated between 1985 and 1995 at the University hospital Mainz. Patients with sarcoma were excluded. For statistical analysis a chi(2)-test was performed for univariat analysis. A Kaplan-Meier procedure was performed for over all survival and disease free interval and COX-Regression for multivariate analysis of independence. -, Results: The mean follow-up period was 49 months. The mean age was 65 years. 21.8 % of the patients had an additional diabetes mellitus. These patients had a significantly deeper infiltration of the Myometrium (p-value = 0.004) and were more likely to have lymphonode metastasis (p-value = 0.02). -, Conclusion: Our results show a correlation between Diabetes mellitus and adverse prognostic factors witch affects by the rate of lymphonode spread and overall survival.
- Published
- 2001
- Full Text
- View/download PDF
93. Perineal excision of a large angiomyxoma in a young woman following magnetic resonance and angiographic imaging.
- Author
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Steiner E, Schadmand-Fischer S, Schunk K, Bezzi I, Weikel W, Pilch H, and Knapstein PG
- Subjects
- Adult, Female, Humans, Magnetic Resonance Angiography, Magnetic Resonance Imaging, Myxoma diagnosis, Myxoma pathology, Vulvar Neoplasms diagnosis, Vulvar Neoplasms pathology, Myxoma surgery, Perineum surgery, Vulvar Neoplasms surgery
- Abstract
Background: Aggressive angiomyxomas are rare, arise from connective tissue of the perineum or the lower pelvis, and affect predominantly young women., Case: We describe an unusual case of aggressive angiomyxoma in which the perineal approach was possible owing to MRI scanning and selective angiography indications., Conclusion: In cases of large aggressive angiomyxomas these diagnostic procedures should make it possible to decide which operative route might be best for the patient., (Copyright 2001 Academic Press.)
- Published
- 2001
- Full Text
- View/download PDF
94. Release of non-neuronal acetylcholine from the human placenta: difference to neuronal acetylcholine.
- Author
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Wessler I, Roth E, Schwarze S, Weikel W, Bittinger F, Kirkpatrick CJ, and Kilbinger H
- Subjects
- Acetylcholine biosynthesis, Colforsin pharmacology, Drug Interactions, Electric Stimulation, Female, Humans, Placenta drug effects, Placenta enzymology, Receptors, Nicotinic drug effects, Acetylcholine metabolism, Choline O-Acetyltransferase metabolism, Cholinesterase Inhibitors pharmacology, Placenta metabolism
- Abstract
The synthesis and release of non-neuronal acetylcholine, a widely expressed signaling molecule, were investigated in the human placenta. This tissue is free of cholinergic neurons, i.e. a contamination of neuronal acetylcholine can be excluded. The villus showed a choline acetyltransferase (ChAT) activity of 0.65 nmol/mg protein per h and contained 500 nmol acetylcholine/g dry weight. In the absence of cholinesterase inhibitors the release of acetylcholine from isolated villus pieces amounted to 1.3 nmol/g wet weight per 10 min corresponding to a fractional release rate of 0.13% per min. The following substances did not significantly modify the release of acetylcholine: oxotremorine (1 microM), scopolamine (1 microM), (+)-tubocurarine (30 microM), forskolin (30 microM), ouabain (10 microM), 4alpha-phorbol 12,13-didecanoate (1 microM) and tetrodotoxin (1 microM). Removal of extracellular calcium, phorbol 12,13-dibutyrate (1 microM) and colchicine (100 microM) reduced the acetylcholine release between 30% and 50%. High potassium chloride (54 mM and 108 mM) increased the acetylcholine release slightly (by about 30%). A concentration of 10 microM nicotine was ineffective, but 100 microM nicotine enhanced acetylcholine release gradually over a 50-min period without desensitization of the response. The facilitatory effect of nicotine was prevented by 30 microM (+)-tubocurarine. Inhibitors of cholinesterase (physostigmine, neostigmine; 3 microM) facilitated the efflux of acetylcholine about sixfold, and a combination of both (+)-tubocurarine (30 microM) and scopolamine (1 microM) halved the enhancing effect. In conclusion, release mechanisms differ between non-neuronal and neuronal acetylcholine. Facilitatory nicotine receptors are present which are activated by applied nicotine or by blocking cholinesterase. Thus, cholinesterase inhibitors increase assayed acetylcholine by two mechanisms, protection of hydrolysis and stimulation of facilitatory nicotine receptors.
- Published
- 2001
- Full Text
- View/download PDF
95. [P53-status in primary ovarian carcinomas, ovarian metastases of neoplasms in other sites and benign ovarian tumors: predictive value in comparison to histopathological parameters].
- Author
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Casper F, Weikel W, Schaffrath M, Kuner RP, Hoffmann G, Pollow B, and Pollow K
- Subjects
- Age Factors, Aged, Aged, 80 and over, Carcinoma genetics, Carcinoma pathology, Carcinoma surgery, Enzyme-Linked Immunosorbent Assay, Female, Gene Expression Regulation, Neoplastic, Humans, Life Expectancy, Middle Aged, Neoplasm, Residual chemistry, Neoplasm, Residual pathology, Neoplasms, Unknown Primary genetics, Neoplasms, Unknown Primary pathology, Neoplasms, Unknown Primary surgery, Ovarian Neoplasms genetics, Ovarian Neoplasms pathology, Ovarian Neoplasms surgery, Predictive Value of Tests, Prognosis, Survival Analysis, Tumor Suppressor Protein p53 genetics, Biomarkers, Tumor analysis, Carcinoma chemistry, Genes, p53 genetics, Mutation, Neoplasms, Unknown Primary chemistry, Ovarian Neoplasms chemistry, Tumor Suppressor Protein p53 analysis
- Abstract
Objective: The purpose of this study was to determine whether the tumor suppressor gene p53 can be used as a prognosis factor to assess individual patient risk in primary ovarian carcinoma., Materials and Methods: The concentration of the mutated, as well as the wild type p53 was examined in 98 cases of ovarian carcinoma. Among 98 ovarian tumors examined, 77 were primary carcinomas, 14 tumors were metastasis of foreign tumors, and 7 were benign ovarian tumors. The pan-53 ELISA from Fa. Dianova was used to test for the p53 protein., Results: The p53 protein concentration exhibited a wide range in the different tissue samples. Benign tumors contained significantly lower p53 concentrations than malignant tumors. After the data was analyzed using Kaplan-Meier, a p53 concentration of 507.1 pg/ml was established as cut-off point for assessing cancer prognosis as good or poor. Patients exhibiting p53 concentrations over 507.1 pg/ml had a median life expectancy of 20 months, and patients exhibiting lower tumor concentrations of p53 had a life expectancy of over 70 months. A significant relationship between patient life expectancy could also be shown for tumor stage and type, whereas not for tumor grading., Conclusions: Based on the results of this study, the routine measurement of p53 may allow for a better prognostic assessment of life expectancy of patients with primary ovarian carcinoma.
- Published
- 2000
96. [Value of p53, urokinase plasminogen activator, PAI-1 and Ki-67 in vulvar carcinoma].
- Author
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Hoffmann G, Casper F, Weikel W, Kümmerle T, Pollow B, Schaffrath M, Hofmann M, and Pollow K
- Subjects
- Adult, Aged, Aged, 80 and over, Carcinoma, Squamous Cell mortality, Female, Humans, Ki-67 Antigen analysis, Middle Aged, Neoplasm Recurrence, Local pathology, Plasminogen Activator Inhibitor 1 analysis, Prognosis, Survival Rate, Tumor Suppressor Protein p53 analysis, Urokinase-Type Plasminogen Activator analysis, Vulva pathology, Vulvar Neoplasms mortality, Biomarkers, Tumor analysis, Carcinoma, Squamous Cell pathology, Vulvar Neoplasms pathology
- Abstract
Objective: The present study was to measure new prognostic factors including the plasminogen activator urokinase and the plasminogen inhibitor PAI-1, as well as p53 and Ki-67, a marker of proliferation and to compare the clinical value of these in relation to the classic histopathological prognostic factors., Material and Methods: The patient collective included 45 patients with vulvar carcinoma, both primary tumors and recurrences., Results: Highly significant correlations were found for tumor diameter and thickness. According to Kaplan-Meier estimations, the influence of thickness on the prognosis had a p-value of 0.048, while the influence of diameter had a p-value of 0.029. The variable grading was also significantly associated to the probability of survival (p = 0.01). There was no statistically significant correlation between p53 and the parameters grading, degree of keratinization and Ki-67 color index. The correlation between p53 and PAI-1 as well as between UPA and PAI-1 was highly significant. According to the Kaplan-Meier estimations, Ki-67, UPA and PAI-1 had no influence on survival in our group of patients., Conclusions: For p53, the median value could be used as a divider with the median survival of patients with a p53 below 122 pg/mg protein being 151 months and with a p53 above 122 pg/mg being only 61 months. The corresponding p-value was significant at 0.0201.
- Published
- 1999
97. Urokinase and plasminogen activator-inhibitor (PAI-1) status in primary ovarian carcinomas and ovarian metastases compared to benign ovarian tumors as a function of histopathological parameters.
- Author
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Hoffmann G, Pollow K, Weikel W, Strittmatter HJ, Bach J, Schaffrath M, Knapstein P, Melchert F, and Pollow B
- Subjects
- Adult, Aged, Aged, 80 and over, Biomarkers, Tumor, Cell Differentiation, Female, Humans, Middle Aged, Neoplasm Metastasis, Ovarian Neoplasms classification, Ovarian Neoplasms pathology, Prognosis, Survival Analysis, Ovarian Neoplasms blood, Plasminogen Activator Inhibitor 1 blood, Urokinase-Type Plasminogen Activator blood
- Abstract
Ninety-eight patients with histologically confirmed ovarian tumors (77 primary ovarian carcinomas of stages T1 to T3 according to the postoperative histopathological classification pTNM classification, 14 ovarian metastases of various origins and seven benign ovarian tumors) were investigated with regard to the concentration of urokinase-type plasminogen activator (uPA) and plasminogen activator inhibitor (PAI-1) in membrane extracts of tumors. The results were correlated with the clinical course and with histopathological findings. With more advanced stage of primary ovarian carcinomas, there was a highly significant rise in the membrane concentrations of both uPA and PAI-1. However, increasing dedifferentiation of the tumors correlated only with uPA, but not with PAI-1. There was no correlation between the number of steroid receptors for estradiol and progesterone and the content of uPA or PAI-1 in the primary ovarian carcinomas. In the 14 ovarian metastases of different origins incluced in the study, the contents of uPA and PAI-1 were comparable to those of primary ovarian carcinomas. Compared with the malignant ovarian tumors, the median uPA and PAI-1 concentrations in the membrane fraction were 2.5-6 fold lower (highly significant) in the group of seven benign tumors. A cut-off value of 4.8ng/mg pellet protein for a prognostically favorable (< 4.8) or unfavorable course (> 4.8) could be determined for uPA (p = 0.0392) but not for PAI-1 on the basis of the Kaplan and Meier survival curves in the malignant primary ovarian carcinomas.
- Published
- 1999
- Full Text
- View/download PDF
98. [Value of clinically established MRI procedures concerning the pretherapeutic evaluation of maximal tumor diameter in primary or recurrent cervix cancer in relation to palpation findings and histopathologic whole mount specimens].
- Author
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Schäffer U, Hawighorst H, Pilch H, Weikel W, Zuna I, and Knapstein PG
- Subjects
- Adult, Aged, Biopsy, Female, Humans, Middle Aged, Neoplasm Staging, Palpation, Recurrence, Reproducibility of Results, Uterine Cervical Neoplasms therapy, Magnetic Resonance Imaging, Uterine Cervical Neoplasms diagnosis, Uterine Cervical Neoplasms pathology
- Abstract
Objective: The maximal tumor diameter of cervical cancer is one of the most important prognosis factors concerning patients' survival. The purpose of this study was to investigate the efficiency of different MRI-procedures in relation to clinical palpation concerning pretherapeutic tumor diameter assessment., Material and Methods: Thirty-one patients with biopsy proven primary cervical cancer and its recurrence (n = 10), respectively, underwent dynamic and conventional MRI before further treatment. The results of maximal tumor diameters were compared to palpatory findings and then correlated to the whole mount specimen as gold standard., Results: The contrast-enhanced dynamic and T2-weighted MRI allows a significantly better (p < 0.05) assessment of maximal tumor diameter of cervical cancer than the conventional T1-weighted MRI. The T2-weighted MRI showed the highest correlation (r = 0.83) in respect to the whole mount specimen up to FIGO-IIB disease. The contrast-enhanced dynamic MRI and the palpation were characterized by the highest correlation coefficients of r = 0.77, r = 0.70 respectively, in advanced cervical cancer > FIGO-IIB disease., Conclusions: The MRI procedures offer no evident advantage in relation to clinical palpation to determine the maximal tumor diameter of cervical cancer or its recurrency and seems not to be indicated generally.
- Published
- 1999
99. [Detection of angiogenesis-dependent parameters by functional MRI: correlation with histomorphology and evaluation of clinical relevance as prognostic factor using cervix carcinoma as an example].
- Author
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Hawighorst H, Schaeffer U, Knapstein PG, Knopp MV, Weikel W, Schönberg SO, Essig M, and van Kaick G
- Subjects
- Adult, Analysis of Variance, Biomarkers, Biopsy, Capillaries pathology, Endothelial Growth Factors analysis, Factor VIII analysis, Female, Follow-Up Studies, Humans, Lymphokines analysis, Middle Aged, Neovascularization, Pathologic pathology, Prognosis, Survival Rate, Time Factors, Treatment Outcome, Uterine Cervical Neoplasms mortality, Uterine Cervical Neoplasms surgery, Vascular Endothelial Growth Factor A, Vascular Endothelial Growth Factors, Magnetic Resonance Imaging methods, Neovascularization, Pathologic diagnosis, Uterine Cervical Neoplasms blood supply, Uterine Cervical Neoplasms pathology
- Abstract
Purpose: Purpose of this study is to compare functional MRI parameters with histomorphological markers of tumor microvessel density (MVD) and permeability (vascular endothelial growth factor) and to determine the ultimate value of both approaches by correlation with disease outcome in patients with primary cancer of the uterine cervix., Method: Pharmacokinetic parameters were calculated from contrast-enhanced dynamic MR imaging series in 37 patients with biopsy-proven primary cervical cancer. On the operative whole mount specimens, histomorphological markers of tumor angiogenesis (MVD, VEGF) were compared with the MRI-derived parameters. For MRI and histomorphological data, Kaplan-Meier survival curves were calculated and compared using logrank statistics., Results: Significant (p < 0.05-0.01) associations were found between MVD and dynamic MRI parameters. No significant relationships were observed between VEGF expression and dynamic MRI parameters. Disease outcome was better assessed with dynamic MRI parameters than with the histomorphological approach., Conclusions: It is concluded that 1) the pathophysiological basis for the amplitude A in dynamic MRI is MVD but not VEGF expression; and 2) a functional, dynamic MRI approach may be more suited to assess angiogenic activity in terms of patient survival than current histomorphological-based markers of tumor angiogenesis.
- Published
- 1998
- Full Text
- View/download PDF
100. Angiogenic activity of cervical carcinoma: assessment by functional magnetic resonance imaging-based parameters and a histomorphological approach in correlation with disease outcome.
- Author
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Hawighorst H, Weikel W, Knapstein PG, Knopp MV, Zuna I, Schönberg SO, Vaupel P, and van Kaick G
- Subjects
- Adult, Aged, Endothelial Growth Factors analysis, Female, Humans, Lymphokines analysis, Magnetic Resonance Imaging, Microcirculation pathology, Middle Aged, Uterine Cervical Neoplasms pathology, Vascular Endothelial Growth Factor A, Vascular Endothelial Growth Factors, Neovascularization, Pathologic diagnosis, Uterine Cervical Neoplasms blood supply
- Abstract
Angiogenesis plays a fundamental role in tumor growth and metastasis. What is needed is a quantitative, noninvasive, and repeatable assay to estimate functional angiogenic activity of the entire tumor. The aims of the present study were to: (a) examine the relationship between functional magnetic resonance imaging (MRI)-based parameters with established histomorphological markers of tumor angiogenesis [histological microvessel density (HMVD) and vascular endothelial growth factor expression (VEGF)]; and (b) determine the ultimate value of both approaches to assess functional angiogenic active hotspots as markers of disease outcome in patients with cancer of the uterine cervix. Pharmacokinetic parameters (amplitude A, tissue exchange rate constant k21) were calculated from contrast-enhanced dynamic MRI series in 57 patients (mean age, 49 +/- 14 years) with biopsy proven uterine cervical cancer. Both pharmacokinetic parameters were correlated to histomorphologically determined areas of high HMVD and VEGF expression obtained from the operative specimens after radical surgery. In addition, the functional MRI and histomorphological data were used to assess disease outcome. A significant association was found between HMVD and the amplitude A (P < 0.001) and a less pronounced association with k21, (P < 0.05), respectively. No significant associations were found between the pharmacokinetic parameters (A, k21) and VEGF expression. When stratified into high and low median k21 groups, median k21 values >5.4 min(-1) were the only significant (P < 0.05) factors in predicting poor patient survival. None of the histomorphological markers of angiogenesis (HMVD or VEGF expression) showed any predictive power. We have found that: (a) focal hotspots of HMVD are the pathophysiological basis for differences in functional MRI; (b) areas of high microvessel density and microvessel permeability do not necessarily coincide, as demonstrated by the histomorphological and functional MRI findings; (c) the functional angiogenic activity of a tumor may not be sufficiently characterized by a histomorphological approach but rather by a functional MRI-based approach; and (d) functional MRI-based analysis may assess tumor angiogenic activity in terms of disease outcome more comprehensively than the histomorphological approach.
- Published
- 1998
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