34 results on '"B. Covin"'
Search Results
2. The Kidd (JK) Blood Group System
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Amy Powers, Shaun Lawicki, and Randal B. Covin
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Adult ,Blood Platelets ,Niacinamide ,0301 basic medicine ,medicine.medical_specialty ,Neutrophils ,medicine.medical_treatment ,Clinical Biochemistry ,Antigens, CD34 ,Hematopoietic stem cell transplantation ,030204 cardiovascular system & hematology ,Biology ,Chimerism ,Erythroblastosis, Fetal ,03 medical and health sciences ,0302 clinical medicine ,Antigen ,medicine ,Humans ,Kidd Blood-Group System ,Platelet ,Child ,Randomized Controlled Trials as Topic ,chemistry.chemical_classification ,Biochemistry (medical) ,Hematopoietic Stem Cell Transplantation ,Infant, Newborn ,Mesenchymal Stem Cells ,Transfusion medicine ,Health Care Costs ,Hematology ,Fetal Blood ,Hematopoietic Stem Cells ,Phenotype ,Virology ,030104 developmental biology ,Blood Grouping and Crossmatching ,chemistry ,Purines ,Immunology ,Blood Group Antigens ,biology.protein ,Cytokines ,Kidd antigen system ,Cord Blood Stem Cell Transplantation ,Antibody ,Glycoprotein - Abstract
The Kidd blood group system was discovered in 1951 and is composed of 2 antithetical antigens, Jka and Jkb, along with a third high-incidence antigen, Jk3. The Jk3 antigen is expressed in all individuals except those with the rare Kidd-null phenotype. Four Kidd phenotypes are therefore possible: Jk(a+b-), Jk(a-b+), Jk(a+b+), and Jk(a-b-). The glycoprotein carrying the Kidd antigens is a 43-kDa, 389-amino acid protein with 10 membrane-spanning domains which functions as a urea transporter on endothelial cells of the renal vasa recta as well as erythrocytes. The HUT11/UT-B/JK (SLC14A1) gene encoding this glycoprotein is located on chromosome 18q12-q21. The Jka and Jkb antigens are the result of a single-nucleotide polymorphism present at nucleotide 838 resulting in an aspartate or asparagine amino acid at position 280, respectively. The Kidd blood group can create several difficult transfusion situations. Besides the typical acute hemolytic transfusion reactions common to all clinically relevant blood group antigens, the Kidd antigens are notorious for causing delayed hemolytic transfusion reactions due to the strong anamnestic response exhibited by antibodies directed against Kidd antigens. The Kidd-null phenotype is extremely rare in most ethnic groups, but is clinically significant due to the ability of those with the Kidd-null phenotype to produce antibodies directed against the high-incidence Jk3 antigen. Anti-Jk3 antibodies behave in concordance with anti-Jka or anti-Jkb possessing the capability to cause both acute and delayed hemolytic reactions. Antibodies against any of the 3 Kidd antigens can also be a cause of hemolytic disease of the fetus and newborn, although this is generally mild. In this review, we will outline the makeup of the Kidd system from its historical discovery to the details of the Kidd gene and glycoprotein, and then discuss the practical aspects of Kidd antibodies and transfusion reactions with an extended focus on the Kidd-null phenotype. We will end with a brief discussion of the donor aspects related to the screening and supply management of blood from donors with the rare Jk(a-b-) phenotype.
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- 2017
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3. Classification des discordances radio-anatomopathologiques des biopsies transrectales guidées par l’IRM
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Mathieu Roumiguié, B. Malavaud, B. Covin, Pierre Graff-Cailleaud, A. Bajeot, S. Sarah, R. Aziza, Nicolas Doumerc, M. Soulié, Maxime Thoulouzan, and O. Meyrignac
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs L’AFU recommande la realisation de biopsies guidees par l’IRM afin d’ameliorer l’evaluation pre-therapeutique de l’agressivite tumorale. Cela suppose que la chaine associant l’imagerie, aux biopsies soit de parfaite qualite malgre la multiplicite des intervenants, interrogeant toute discordance. Nous confrontons systematiquement biopsies et imagerie et rapportons ici la proportion de discordance des biopsies ciblees par voie transrectale selon l’une ou l’autre de trois definitions predefinies. Methodes Les dossiers de cancers de la prostate presentes en RCP du 01/01/2017 au 31/12/2019 ont ete revus retrospectivement, avec pour les cancers localises et les biopsies negatives relecture de l’imagerie par un radiologue expert selon PI-RADS-v2. La definition de discordance des biopsies guidees par l’image transrectales etait adaptee de la litterature : – type 1 : pas de cancer ou ISUP 1 ET PI-RADS ≥ 4 ; – type 2 : pas de cancer ou ISUP 2 ET localisation anterieure de la cible ; – type 3 : Nous presentons les resultats sous forme de statistiques descriptives (valeurs absolues, proportions). Resultats Au total, 2602 dossiers ont ete analyses ( Fig. 1 ). Au total, 1158 (44,5 %) correspondaient a l’analyse de donnees biopsiques dont 420 (36,2 %) etaient realisees de maniere systematisee, 212 (18,3 %) guidees par modalite cognitive et 481 (41,5 %) guidees par fusion d’image IRM. Pour ce qui concerne les biopsies guidees, 135 (19,5 %) etaient realisees par voie transperineale et 558 (80,5 %) par voie transrectale. On observait au moins un type de discordance dans 152 (27,2 %) cas sur les biopsies ciblees transrectales. Le type 1 etait le plus represente, associe dans la majorite des cas au type 2 (type I : 130, II : 94, III : 56, Fig. 2 ). Le type 3 etait minoritaire, en faveur d’une bonne selection des patients et d’une bonne qualite d’echantillonnage par biopsies ciblees. Conclusion Les biopsies transrectales guidees par l’image etaient jugees discordantes dans 27 % des cas selon les 3 types definis. L’augmentation du nombre de biopsies guidees par l’image en reponse aux recommandations de l’AFU pose la question de la conduite a tenir devant toute contradiction entre l’imagerie et l’analyse histologique. Le developpement d’autres techniques comme la voie transperineale pourrait y repondre.
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- 2020
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4. MP24-08 REFINING THE RISK-STRATIFICATION OF TRANSRECTAL-BIOPSY DETECTED PROSTATE CANCER BY ELASTIC FUSION REGISTRATION TRANSPERINEAL BIOPSIES
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Mathieu Roumiguié, Daniel Portalez, Pierre Graff, B. Covin, Guillaume Ploussard, Richard Aziza, Jonathan Khalifa, Marie-Laure Ranty, and Bernard Malavaud
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Prostate cancer ,medicine.medical_specialty ,medicine.diagnostic_test ,Transrectal biopsy ,business.industry ,Urology ,Risk stratification ,Biopsy ,medicine ,Radiology ,medicine.disease ,business - Abstract
INTRODUCTION AND OBJECTIVES:To evaluate image-guided Transperineal Elastic-Registration biopsy (TPER-B) in the risk-stratification of low-to-intermediate risk prostate cancer detected by Transrecta...
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- 2019
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5. MP42-10 LONG TERM TRIFECTA OUTCOMES OF PARTIAL NEPHRECTOMY VERSUS PERCUTANEOUS ABLATION IN CT1A RENAL MASSES
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Xavier Gamé, Nicolas Doumerc, Mathieu Roumiguié, Thibaut Benoit, Marie Charlotte Delchier, Matthieu Thoulouzan, Eric Huyghe, Séverine Lagarde, B. Covin, Jean Baptiste Beauval, and Michel Soulié
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medicine.medical_specialty ,Percutaneous ,business.industry ,Urology ,medicine.medical_treatment ,medicine ,Ablation ,business ,Nephrectomy ,Term (time) ,Surgery - Published
- 2019
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6. Migration of an abdominal mesh into a reconstructed ileal neobladder, diagnosis and management: A case report
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B. Covin, Joseph Zgheib, Mathieu Roumiguié, Michel Soulié, and Eric Huyghe
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medicine.medical_specialty ,Urinary bladder ,business.industry ,Urology ,030232 urology & nephrology ,Lumen (anatomy) ,lcsh:Diseases of the genitourinary system. Urology ,lcsh:RC870-923 ,Surgery ,Ileal bladder ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Male patient ,030220 oncology & carcinogenesis ,Medicine ,Trauma and Reconstruction ,Complication ,business - Abstract
Migration of an abdominal mesh is a very rare complication. Few reports have described migrations to the bowels and to the urinary bladder but none reported the migration into an ileal bladder. This case report describes an extremely rare but possible migration of abdominal mesh into the lumen of the neobladder. We present a case of a 65 year old male patient who had an abdominal mesh migration into a reconstructed ileal neobladder. The management was done over two parts with endourology laser assistance and open approach. The report shows the possible causes and ways of management of this complication.
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- 2019
7. Refining the risk-stratification of transrectal biopsy-detected prostate cancer by elastic fusion registration transperineal biopsies
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Guillaume Ploussard, Mathieu Roumiguié, Marie-Laure Quintyn-Ranty, Richard Aziza, B. Covin, Bernard Malavaud, Daniel Portalez, Pierre Graff, and Jonathan Khalifa
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Nephrology ,Image-Guided Biopsy ,Male ,medicine.medical_specialty ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Perineum ,Risk Assessment ,03 medical and health sciences ,Prostate cancer ,0302 clinical medicine ,Prostate ,Internal medicine ,Biopsy ,medicine ,Humans ,Aged ,Ultrasonography ,Prostatectomy ,medicine.diagnostic_test ,business.industry ,Cancer ,Prostatic Neoplasms ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Tumor Burden ,Radiation therapy ,medicine.anatomical_structure ,Transrectal biopsy ,030220 oncology & carcinogenesis ,Radiology ,Neoplasm Grading ,business - Abstract
To evaluate image-guided Transperineal Elastic-Registration biopsy (TPER-B) in the risk-stratification of low-intermediate risk prostate cancer detected by Transrectal-ultrasound biopsy (TRUS-B) when estimates of cancer grade and volume discorded with multiparametric Magnetic Resonance Imaging (MRI).All patients referred for active surveillance or organ-conservative management were collegially reviewed for consistency between TRUS-B results and MRI. Image-guided TPER-B of the index target (IT) defined as the largest Prostate Imaging-Reporting Data System-v2 ≥ 3 abnormality was organized for discordant cases. Pathology reported Gleason grade, maximum cancer core length (MCCL) and total CCL (TCCL).Of 237 prostate cancer patients (1-4/2018), 30 were required TPER-B for risk-stratification. Eight cores were obtained [Median and IQR: 8 (6-9)] including six (IQR: 4-6) in the IT. TPER-B of the IT yielded longer MCCL [Mean and (95%CI): 6.9 (5.0-8.8) vs. 2.6 mm (1.9-3.3), p 0.0001] and TCCL [19.7 (11.6-27.8) vs. 3.6 mm (2.6-4.5), p = 0.0002] than TRUS-B of the gland. On TPER-B cores, longer MCCL [Mean and (95%CI): 8.7 mm (6.7-10.7) vs. 4.1 mm (0.6-7.6), p = 0.002] were measured in Gleason score-7 cancers. TPER-B cores upgraded 13/30 (43.3%) patients. 14/30 (46.7%) met University College London-definition 1 and 18/30 (60.0%) definition 2, which correlate with clinically significant cancers 0.5 mL and 0.2 mL, respectively. 7/16 (43.8%) patients under active surveillance were re-allocated toward prostatectomy (n = 5) or radiation therapy (n = 2). In 14 patients not yet assigned, TPER-B risk-stratification spurred the selection (13/14, 92.9%) of treatments with curative intent.Image-guided TPER-B of the index target provided more cancer material for pathology. Subsequent re-evaluation of cancer volume and grade switched a majority of patients towards higher-risk groups and treatments with curative intent.
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- 2018
8. Comparaison de la néphrectomie partielle et des traitements radio-ablatifs dans la prise en charge des tumeurs du rein de moins de 4 cm chez les patients jeunes et peu comorbides
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M.C. Delchier, Nicolas Doumerc, Jean-Baptiste Beauval, Maxime Thoulouzan, S. Lagarde, B. Covin, Mathieu Roumiguié, M. Soulié, Thibaut Benoit, E. Huyghe, and X. Gamé
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,Medicine ,business - Abstract
Objectifs Les recommandations proposent la nephrectomie partielle (NP) en premiere intention pour le traitement des petites tumeurs du rein ( L’objectif etait de comparer les resultats oncologiques et la morbidite des TRA avec le traitement recommande des PTR, la NP, chez les patients jeunes sans comorbidite. Methodes Une etude observationnelle retrospective monocentrique a permis d’inclure les patients traites pour une tumeur renale classee cT1a entre 2010 et 2014. Les patients âges de plus de 70 ans ou porteurs d’un score ASA ≥ 3 ont ete exclus. Les caracteristiques des patients et des tumeurs ont ete colligees, notamment leur complexite (R. E. N. A. L. score), et les donnees perioperatoires (duree d’hospitalisation, complications [Clavien], creatininemie). Le test du Chi2 (ou Fischer) a ete utilise pour comparer les variables qualitatives, le t-test (Student) pour les variables quantitatives. Les survies (sans recidive, et globale) ont ete analysees selon Kaplan–Meier et comparees par test du log-rank. Resultats Parmi les 248 patients traites pour une PTR entre 2010 et 2014 (NP = 117, TRA = 131). Cent vingt-trois patients ont ete inclus dans l’analyse finale (NP = 83, TRA = 40). Les groupes etaient comparables sur les donnees pre-therapeutiques sauf pour la taille tumorale, les tumeurs traitees par TRA etant plus petites que celles traitees par NP ( Tableau 1 ). Au terme d’un suivi median de plus de 60 mois, la survie sans recidive n’etait pas statistiquement differente entre la TRA et la NP (85 % [n = 6] vs 91,5 % [n = 7] [p = 0,17]). La survie globale etait egalement comparable pour TRA vs NP (97,5 % [n = 1] vs 95,2 % [n = 4] [p = 0,52]) ( Fig. 1 ). La variation de la creatininemie et la survenue de complications (Clavien) etaient comparables dans les deux groupes, alors que la duree d’hospitalisation etait significativement plus courte dans le groupe TRA (3 vs 6 j, p Tableau 2 ). Conclusion Chez les patients jeunes et peu comorbides, les traitements radio-ablatifs se placent comme une ressource therapeutique efficace a long terme et peu morbide dans les tumeurs renales T1a.
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- 2019
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9. Robot-assisted laparoscopic partial nephrectomy with renal artery clamping using an endovascular balloon catheter for an allograft kidney tumor: A new perspective to manage renal vascular control?
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Marie-Charlotte Delchier, Michel Soulié, B. Covin, Xavier Gamé, Mathieu Roumiguié, Nassim Kamar, Florian Laclergerie, Federico Sallusto, Jean-Baptiste Beauval, and Nicolas Doumerc
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Transplantation ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,030232 urology & nephrology ,Balloon catheter ,030230 surgery ,Nephrectomy ,Clamping ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine.artery ,Immunology and Allergy ,Medicine ,Pharmacology (medical) ,Renal artery ,business ,Allograft kidney - Published
- 2019
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10. Long term trifecta outcomes of partial nephrectomy versus percutaneous ablation in cT1a renal masses
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B. Covin, T. Benoit, M.C. Delchier, S. Lagarde, M. Roumiguié, N. Doumerc, M. Thoulouzan, E. Huyghe, X. Gamé, M. Soulié, and J.B. Beauval
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Urology - Published
- 2019
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11. Biopsies prostatiques transpérinéales en fusion élastique échographie transrectale-IRM : aspects techniques et résultats d’une série de 50 cas
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Daniel Portalez, B. Covin, Guillaume Ploussard, Jonathan Khalifa, Pierre Graff, Mathieu Roumiguié, Jean-Baptiste Beauval, M. Quintyn Ranty, B. Malavaud, and R. Aziza
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,Medicine ,business - Abstract
Objectifs Les biopsies prostatiques guidees par l’image apportent un meilleur echantillonnage des lesions d’interet vues en IRM, et permettent un archivage des donnees. Neanmoins, certaines lesions (extreme apex, lesions anterieures) sont difficilement accessibles par voie transrectale. L’objectif de notre travail etait d’evaluer la faisabilite et les resultats de l’abord transperineal des biopsies prostatiques. Methodes Nous avons evalue la detection de cancer de prostate globale et cliniquement significatif (≥ Gleason 7). Les patients ayant une zone d’interet anterieure sur l’IRM prostatique ou des cibles mal caracterisees par des biopsies anterieures ont ete inclus. Un seul binome radiologue-urologue realisait les biopsies en position de lithotomie, sous anesthesie generale ou locale selon le desir du patient. Le geste etait realise a l’aide de la station Trinitry, de Koelis (La Tronche, France). Les donnees concernant l’âge, les biopsies anterieures, l’IRM prostatique, le PSA, l’anatomopathologie, les decisions cliniques ont ete recueillies de facon retrospective. Resultats Entre janvier 2018 et avril 2018, 50 patients ont ete inclus. L’âge median etait de 68,5 ans. Le PSA median etait de 9,35 ng/mL. Quarante-trois patients (87 %) avaient deja eu des biopsies dont 18 en Koelis transrectale. La repartition des biopsies (primo-diagnostic, requalification, recherche d’une recidive) est resumee sur la Fig. 1 . Les biopsies transperineales etaient positives dans 62 % des cas (n = 31). Parmi celles-ci, 83 % (n = 26) etaient un cancer cliniquement significatif. La longueur tumorale maximale mediane etait de 9,5 mm, alors que la longueur cumulee tumorale mediane etait de 23,5 mm ( Tableau 1 ). Aucune complication infectieuse n’a ete relevee dans notre serie. Conclusion Les biopsies prostatiques par voie transperineales en fusion d’image apparaissent comme aisement realisables au plan technique, et non inferieures au biopsies transrectales en termes de diagnostic de cancer cliniquement significatif.
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- 2018
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12. Prise en charge des traumatismes de l’urètre postérieur dans les fractures du bassin chez l’homme : comparaison du réalignement endoscopique précoce versus urétroplastie différée
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C. Allenet, B. Cereda, Grégoire Robert, Thibaut Murez, M Robert, B. Covin, N. Abdo, Jean-Baptiste Beauval, Rodolphe Thuret, and L. Cabaniols
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs La lesion de l’uretre posterieur est une pathologie rare, aux sequelles fonctionnelles critiques a long terme. Les recommandations europeennes concernant le traitement laissent libre choix entre realignement endoscopique precoce (REP) ou pose d’un catheter sus-pubien avec uretroplastie differee (UD). Les donnees de la litterature sont heterogenes quant aux resultats des techniques et leur presentation. Methodes Etude retrospective multicentrique des lesions traumatiques de l’uretre posterieur prises en charge entre janvier 2007 et janvier 2018. Le critere de jugement principal etait le succes de l’intervention, defini par l’absence de recours a un autre geste uretral, et par l’obtention d’une miction normale et definitive (avec un recul d’au moins 6 mois). Le second critere de jugement etait le delai pour y parvenir. Les criteres de jugement secondaires etaient le nombre de reintervention, et le succes de l’uretroplastie apres REP versus UD. Resultats Trente-six patients ont ete inclus, 25 dans le groupe REP et 11 dans le groupe UD. Le taux de succes primaire du groupe UD etait significativement meilleur que celui du groupe REP : 45 % (5/11) versus 0 % (0/25), p = 0,001. Le delai moyen pour obtenir une miction normale et definitive etait plus court dans le groupe UD de 96 jours en moyenne, sans atteindre le seuil de significativite statistique (275,7 jours pour le groupe REP contre 179,5 jours pour le groupe UD, p = 0,08). Les patients du groupe REP subissaient en moyenne significativement plus de reintervention : 2,08 contre 0,27 pour le groupe UD, p Conclusion Dans notre etude, nous n’avons pas mis en evidence d’effet preventif du REP sur le taux de stenose. Le delai pour recuperer une miction normale et definitive semble meilleur pour l’UD. Nous placons donc l’UD comme traitement de choix de la rupture uretrale posterieur traumatique complete.
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- 2019
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13. Évaluation du test SelectMDX-V2 dans le diagnostic par biopsies ciblées du cancer de la prostate
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B. Malavaud, Mathieu Roumiguié, Marine Lesourd, O. Meyrignac, M. Soulié, R. Aziza, S. Péricart, Pascal Rischmann, Daniel Portalez, and B. Covin
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,Medicine ,business - Abstract
Objectifs Evaluer les performances diagnostiques du test SelecMDX-V2 dans la detection des cancers significatifs de la prostate (CaPs) par des biopsies ciblees sur des lesions IRM. Methodes Nous avons selectionne dans notre base de donnees clinicobiologiques les patients ayant : – recueil premier jet urinaire apres massage prostatique ; – recueil exhaustif des donnees clinicobiologiques (âge antecedents familiaux de cancer personnel de biospie, TR volume prostatique, dosage centralise PSA) permettant un calcul du risque CaP par PCPT-V2 ; – des biopsies ciblees (Koelis°) de la prostate sur des lesions IRM avec des resultats disponibles (Score ISUP biopsies positive systematisees/ciblees). Les echantillons urinaires ont ete adresse au laboratoire MDxHealth en aveugle des resultats biopsiques afin d’obtenir un score individuel SelectMDx-V2 de risque CaPs (score ISUP ≥ 2). Le cut-off combinant les meilleures specificite et sensibilite dans les etudes precedentes etait de −2,8. Resultats Les caracteristiques des 117 patients inclus sont rapportees dans le Tableau 1 . Le selectMDx-V2 a une meilleure precision diagnostique que le PCPT2,0 [AUC 0,66 (IC95 % : 0,55–0,77) vs. 0,55 (IC95 % : 0,4–0,66), respectivement (p = 0,049)] ( Fig. 1 ). Le test selectMDx n’etait pas associe au degre de suspicion des lesions IRM (score PiRADS) (p = 0,5336) ( Fig. 2 ). L’analyse multivariee confirmait que le Score 5 PiRADS, le test selectMDx-V2 et les antecedents de biospies etaient trois facteurs independants predictifs du diagnostic de CaPs. La combinaison de ces 3 variables permettait d’obtenir une performance diagnostique amelioree AUC = 0,76. Conclusion Le test selectMDx-V2 a des performances diagnostiques modestes dans notre cohorte de patients. Par contre, l’independance de ce test avec le score PiRADS, permettait de les combiner pour creer un modele de prediction plus precis.
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- 2019
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14. Néphrectomie partielle sur transplant rénal par voie laparoscopique robot-assistée avec clampage artériel endovasculaire
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Mathieu Roumiguié, Jean-Baptiste Beauval, B. Covin, F. Laclergerie, Nicolas Doumerc, M.C. Delchier, X. Gamé, F. Sallusto, Nassim Kamar, and M. Soulié
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectif Nous rapportons, a notre connaissance, le premier cas de nephrectomie partielle sur transplant renal realisee par voie laparoscopique robot-assistee avec clampage arteriel endovasculaire. Methodes Il s’agit d’un patient de 48 ans, transplante renal en fosse iliaque droite en 2003 pour insuffisance renale chronique terminale chez qui il a ete decouvert lors d’une surveillance echographique une lesion kystique renale de 2 cm situee sur le pole superieur du greffon. L’IRM confirme la presence d’un kyste renal Bosniak 4. Afin d’eviter la dissection du pedicule renal, un abord endovasculaire est realise sous anesthesie locale en radiologie interventionnelle suivi de l’intervention chirurgicale sous anesthesie generale au bloc operatoire. Resultats Dans un premier temps, un ballon occlusif est positionne apres arteriographie au niveau du tronc principal de l’artere renale du transplant. Ensuite, au bloc operatoire, l’artere iliaque primitive est dissequee afin d’obtenir un controle proximal en cas d’occlusion incomplete de l’artere du greffon. Une resection monobloc de la lesion est effectuee apres reperage echographique et clampage arteriel. Une suture parenchymateuse est realisee avant declampage precoce suivi d’une renorraphie puis de l’extraction de la piece operatoire. La duree operatoire est de 60 minutes dont 8 minutes d’ischemie chaude. Les pertes sanguines sont negligeables. L’echographie-doppler du greffon realisee a la fin de l’intervention est normale. Le patient sort a J2 avec une fonction renale stable. L’anatomopathologie retrouve une tumeur multiloculaire de faible potentiel de malignite d’exerese complete. Conclusion Cette intervention semble etre faisable et sure dans la prise en charge des patients presentant une tumeur sur transplant renal.
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- 2019
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15. Biopsies prostatique transpérinéale ciblée en fusion élastique : intérêt dans le primo-diagnostic d’un cancer de la prostate et dans la restadification d’un cancer diagnostiqué par biopsie transrectale
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Guillaume Ploussard, Jonathan Khalifa, B. Malavaud, B. Covin, Mathieu Roumiguié, S. Pericard, R. Aziza, O. Meyrignac, Pierre Graff, and Daniel Portalez
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs L’imagerie IRM permet d’orienter l’evaluation biopsique du cancer de la prostate. La question posee est celle des performances de la voie transperineale selon la localisation de la cible chez des patients n’ayant pas eu de biopsie prealable ; chez les patients deja biopsies, se pose la question de l’interet de la biopsie transperineale en fusion elastique (TPB) dans la stratification du risque de cancer de la prostate de risque faible a intermediaire detecte par biopsie transrectale-echographique lorsque les estimations du grade et du volume de cancer ne sont pas coherentes avec l’IRM. Methodes Les patients en situation de primo-diagnostic n’avaient jamais ete biopsies, et presentaient une cible sur l’IRM prostatique multiparametrique de score PIRADS v2 ≥ 3 Les patients referes pour une surveillance active ou une prise en charge d’organe conservatrice ont ete revus collegialement pour evaluer la coherence des resultats de la biopsie transrectale et de l’IRM, et une biopsie transperineale guidee par l’image a ete organise pour les cas discordants. Un seul binome radiologue–urologue realisait les biopsies transperineale guidees par l’image en fusion elastique, sous anesthesie locale ou generale. Le geste etait realise a l’aide de la station Trinity, de Koelis (Meylan, France). Resultats Entre janvier 2018 et mars 2019, 175 patients ont ete accueillis dans notre centre pour une biopsie prostatique transperineale. Quarante-huit d’entre eux n’avaient jamais eu de biopsie prostatique. Soixante et onze autres patients ont eu besoin d’une TPB pour la stratification du risque. Concernant les patients en primo-diagnostic, la rentabilite diagnostique etait identique pour les lesions anterieures et posterieures (70 %), sans difference sur les longueurs tumorales maximales et cumulees ( Tableau 1 ). Concernant les patients en situation de restadification, les longueurs tumorales maximales dans la cible etaient plus importantes pour TPB [moyenne (IC95 %) : 4,9 (3,7–7,1) vs 2,4 mm (2–2,9), p = 0,0004], comme les longueurs tumorales totales [16,3 (11,3–21,4) vs 3,6 mm (2,7–4,5), p Fig. 1 ). Conclusion La biopsie prostatique transperineale a une rentabilite diagnostique d’environ 70 % dans la situation de primo-diagnostic, avec des performances diagnostiques independantes de la localisation anterieure ou posterieure de la cible. Dans la situation de restadification, la reevaluation du volume et du grade du cancer a fourni plus de materiel pour le pathologiste, et a oriente la majorite des patients vers des groupes a risque plus eleve et des traitements a visee curative.
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- 2019
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16. Prostate image-guided transperineal elastic-registration biopsy, a new diagnostic tool to refine the risk-stratification of prostate cancer and improve therapeutic decisions
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Pierre Graff-Cailleaud, Bernard Malavaud, B. Covin, Mathieu Roumiguié, Daniel Portalez, Richard Aziza, and Jonathan Khalifa
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Cancer Research ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,medicine.disease ,Prostate cancer ,medicine.anatomical_structure ,Oncology ,Prostate ,Risk stratification ,Biopsy ,medicine ,Radiology ,business - Abstract
e16595 Background: To evaluate image-guided Transperineal Elastic-Registration biopsy (TPER-B) in the risk-stratification of low-to-intermediate risk prostate cancer detected by Transrectal-ultrasound biopsy (TRUS-B) when estimates of cancer grade and volume discorded with multiparametric Magnetic Resonance Imaging (MRI). Methods: All patients referred for active surveillance or organ-conservative management were collegially reviewed for consistency between TRUS-B results and MRI. Image-guided TPER-B of the index target (IT) defined as the largest Prostate Imaging-Reporting Data System-v2 ≥3 abnormality were organized for discordant cases. Pathology reported Gleason grade, maximum cancer core length (MCCL) and total CCL (TCCL). Results: Of 237 prostate cancer patients (1-7/2018), 42 required TPER-B for risk-stratification. Eight cores were obtained [Median&IQR: 8 (6-10)] including five (IQR: 4-6) in the IT. TPER-B of the IT yielded longer MCCL [Mean&(95%CI): 5.4(3.9-6.9) vs. 2.5mm(1.9-3.1), p = 0.002] and TCCL [16.7(10.6-22.8) vs. 3.9mm(3.1-4.8), p = 0.0001] than TRUS-B of the gland. On TPER-B cores, longer TCCL [Mean&(95%CI): 28.9mm(19.1-38.7) vs. 12.3mm(4.8-19.7), p = 0.02] were measured in Gleason score-7 than score-6 cancers (no cancers detected on IT TPER-B in 11 patients, all but one score 6 < 4mm on TRUS-B). TPER-B cores of the IT upgraded 16/42(38.1%) patients. 21/42(50.0%) met University College London-definition 1 (Gleason score≥4+3 and/or MCL≥6mm) and 27/42(64.3%) definition 2 (Gleason score≥3+4 and/or MCL≥4mm), which correlate to clinically significant cancers > 0.5mL and > 0.2mL, respectively. Allocation to higher risk groups than anticipated from TRUS-B spurred adaptation of treatment protocols (active surveillance n = 15, prostatectomy n = 11, ionizing radiation n = 13, pending n = 3). Conclusions: Image-guided TPER-B of the index target provided more cancer material for pathology. Subsequent re-evaluation of cancer volume and grade switched a majority of patients towards higher risk groups and treatments with curative intent.
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- 2019
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17. TRIFECTA outcomes of partial nephrectomy versus percutaneous ablation in cT1a renal masses
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Nicolas Doumerc, X. Gamé, Thibaut Benoit, M. Soulié, E. Huyghe, B. Covin, Jean-Baptiste Beauval, S. Lagarde, Mathieu Roumiguié, M.C. Delchier, and Maxime Thoulouzan
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medicine.medical_specialty ,Percutaneous ,business.industry ,Urology ,medicine.medical_treatment ,Medicine ,business ,Ablation ,Nephrectomy ,Surgery ,Term (time) - Published
- 2018
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18. Résultats oncologiques à 5 ans et morbidité périopératoire du traitement radio-ablatif versus chirurgical des tumeurs rénales de moins de 4 cm
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X. Gamé, Jean-Baptiste Beauval, S. Lagarde, Mathieu Roumiguié, B. Covin, M. Soulié, M.C. Delchier, Nicolas Doumerc, Maxime Thoulouzan, Thibaut Benoit, and E. Huyghe
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs La prise en charge des petites tumeurs du rein est une balance entre l’efficacite oncologique et le risque lie au traitement, notamment pour les patients fragiles. L’objectif etait de comparer les resultats oncologiques a 5 ans et la morbidite des traitements des tumeurs du rein de moins de 4 cm (cT1a) par nephrectomie partielle (NP) versus traitement radio-ablatif (TRA). Methodes Depuis 2010, 220 patients ont ete traites par TRA et 300 par NP pour une tumeur cT1a. Une etude observationnelle retrospective monocentrique a ete menee, incluant les patients traites pour une tumeur renale classee cT1a entre 2010 et 2012. Les caracteristiques des patients et des tumeurs ont ete colligees, notamment leur complexite (RENAL score), et les donnees perioperatoires (duree d’hospitalisation, complications [Clavien], creatininemie). Le test du Chi2 (ou Fischer) a ete utilise pour comparer les variables qualitatives, le t-test (Student) pour les variables quantitatives. Les survies (sans recidive, specifique et globale a 5 an s ) ont ete analysees selon Kaplan–Meier et comparees par test du log rank. Resultats Au total, 48 patients ont ete traites par NP et 65 par TRA entre 2010 et 2012. Les patients traites par TRA etaient significativement plus âges, porteurs de tumeurs plus petites et plus complexes que les patients traites par NP. La variation de la creatininemie etait comparable dans les deux groupes (12 vs 8,5 dans le groupe TRA et NP, ns). La duree d’hospitalisation etait significativement plus courte dans le groupe TRA (3 vs 7j, p Fig. 1 ) ( Tableau 1 , Tableau 2 ). Conclusion La prise en charge des petites tumeurs renales peut etre realisee par techniques ablatives, avec de bons resultats oncologiques, permettant une reduction de la duree d’hospitalisation sans majoration des complications. Meme si la prise en charge chirurgicale est la reference, les techniques ablatives apparaissent comme une ressource therapeutique efficace a long terme et peu morbide dans les tumeurs renales T1a.
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- 2017
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19. Performance diagnostique de l’index phi dans le diagnostic moderne du cancer de la prostate
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X. Gamé, B. Covin, Mathieu Roumiguié, Jean-Baptiste Beauval, B. Malavaud, Marine Lesourd, and M. Soulié
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs Determiner le profil de l’index phi dans le diagnostic moderne du cancer de la prostate (CAP). Methodes Etude monocentrique, incluant les patients de 2016 a 2018 qui allaient realiser une IRM prostatique de detection pour suspicion de CAP. Tous les patients avaient un dosage centralise de l’index phi. La decision de realiser des biopsies prostatiques (BP) ciblees avec un systeme de fusion d’image (koelis) reposait sur les donnees cliniques, PSA et IRM sans connaitre le resultat du dosage du phi. Les donnees quantitatives et qualitatives etaient analysees respectivement par le t test de student et le Chi2. La precision diagnostique de l’index phi etait definie par l’aire sous la courbe roc. Resultats Soixante-dix patients etaient inclus, 47 (67 %) avaient des biopsies ciblees et 25 (53 %) cancers etaient diagnostiques ( Fig. 1 ). Les caracteristiques de la population sont decrites dans le Tableau 1 . Nous avons pris en compte 3 seuils pour l’index phi 25, 35 et 55. Les patients avec une IRM pi-rads 4 ou 5 avait un index phi statistiquement plus eleve (phi = 41,41) quand ils avaient un cancer que lorsqu’il n’y avait pas de CAP (phi = 30,24) p = 0,037 ( Fig. 2 ). L’aire sous la courbe de l’index phi etait de 0,68 (p = 0,03) ( Tableau 1 ). Conclusion Dans la pratique clinique, l’index phi est une information complementaire au psa et a l’IRM pour la decision de realiser une nouvelle serie de bp en particulier avec une cible IRM classee pi rads 4 ou 5 et apres une premiere serie de biopsies prostatiques negatives.
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- 2018
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20. Affinement de la stratification du risque de cancer de la prostate détecté par biopsie transrectale par biopsie transpérinéale en fusion élastique
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Jean-Baptiste Beauval, Guillaume Ploussard, B. Malavaud, Mathieu Roumiguié, B. Covin, R. Aziza, Daniel Portalez, Pierre Graff, J. fa, and M. Quintyn Ranty
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs Evaluer la biopsie transperineale en fusion elastique (TPER-B) guidee par l’image dans la stratification du risque de cancer de la prostate de risque faible a intermediaire detecte par biopsie transrectale-echographique (TRUS-B) lorsque les estimations du grade et du volume de cancer discordent avec l’imagerie par resonance magnetique multiparametrique (IRM). Methodes Tous les patients referes pour une surveillance active ou une prise en charge d’organe conservatrice ont ete revus collegialement pour evaluer la coherence des resultats TRUS-B et de l’IRM. Une TPER-B guidee par l’image de la cible index (CI), definie comme la plus grande lesion de PI-RADS-v2 ≥ 3 a ete organisee pour les cas discordants. L’anatomopathologie a analyse le score de Gleason, la longueur tumorale maximale (LTM) et la longueur tumorale totale (LTT). Resultats Sur 237 patients atteints d’un cancer de la prostate (1–4/2018), 30 ont eu besoin de TPER-B pour la stratification du risque. Les LTM dans la CI etaient plus fortes pour TPER-B [moyenne (IC95 %) : 2,6 mm (1,9–3,3) vs 6,9 (5,0–8,8), p Fig. 1 , Fig. 2 , Fig. 3 ). Conclusion La biopsie transperineale guidee par l’image de la cible index a fourni plus de materiel tumoral pour l’anatomopathologie. La reevaluation du volume et du grade du cancer a oriente la majorite des patients vers des groupes a risque plus eleve et des traitements a visee curative.
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- 2018
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21. Validité analytique du test Xpert® Bladder Cancer Monitor dans le contexte particulier des urines inflammatoires des patients sous traitements adjuvants de la vessie n’infiltrant pas le muscle
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B. Malavaud, Mathieu Roumiguié, and B. Covin
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,medicine ,business - Abstract
Objectifs Plusieurs tests de biologie moleculaire sont proposes dans le diagnostic et le suivi des TVNIM. Nous presentons les validites analytiques et biologiques du dosage par RT-PCR quantitative en temps reel d’un panel d’arn messagers–le test urinaire et non invasif Xpert® Bladder Cancer Monitor de Cepheid, Sunnyvale, Etats-Unis (le test xpert) – dans le contexte particulier des urines inflammatoires des patients sous traitements adjuvants (mitomycine C et BCG). Methodes Selon le protocole, des urines mictionnelles sont collectees avant initiation du traitement adjuvant (t0), apres 4 instillations (t1) et immediatement avant la 1re endoscopie de controle apres induction (t2). Dix-huit patients apres resection endoscopique optiquement complete et mise en œuvre d’un traitement adjuvant presentant des cancers de vessie de risque intermediaire (n = 8) ou eleve (n = 10) ont ete inclus. Nous avons collecte de maniere longitudinale 48 echantillons sur une periode de 3 mois. Resultats Validite analytique : les pcr des genes d’etude (ANXA10, UPK1B, CRH et IGF2) et du controle interne (abl1) ont ete realisees sans deviation analytique. Aucun resultat invalide n’a ete observe. Validite clinique : les echantillons de 16/18 patients (88,9 %) etaient positifs a t0. Cinq se sont negativises a t1 (tests positifs : 11/18, 61,1 %). Avant endoscopie de controle (t2), 9/18 (50,0 %) tests etaient negatifs. L’endoscopie de controle a t2 montrait une recidive dans 5/14 cas (35,7 %, ptag 2 :3 cas, ptag 3 :2 cas). Le test Xpert® etait positif dans 8/14 cas, dont 3 en recidive endoscopique (ptag 2 :2 cas, huit microlesions ptag 3 :1 cas). La cytologie etait toujours negative sauf chez le patient presentant huit microlesions ptag3 aussi positif pour le test Xpert®. Nous poursuivons le recrutement jusqu’au seuil de 24 patients evaluables prevu par le protocole. Conclusion Malgre un traitement endoscopique optiquement complet, les resultats a t0 (16/18 patients, 88,9 %), puis la decroissance des tests positifs (t1 : 11/18, 61,1 % ; t2 : 9/18, 50,0 %) suggerent que la biologie moleculaire permettrait de reperer la maladie residuelle. Si la technique du test Xpert® est parfaitement robuste, on ne peut encore juger de sa validite clinique dans le contexte tres particulier des traitements adjuvants.
- Published
- 2018
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22. La grande précision des biopsies transpérinéales guidées par l’image utilisant le système Trinity® est indépendante du type d’anesthésie utilisée
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B. Covin, Mathieu Roumiguié, B. Malavaud, Jean-Baptiste Beauval, and Daniel Portalez
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business.industry ,Urology ,Medicine ,business ,Nuclear medicine - Abstract
Objectifs Dans le cadre de biopsies guidees par l’image, mesurer la precision de biopsies transperineales utilisant un systeme de fusion elastique (Trinity® Koelis, Grenoble). Verifier que la precision ne differe pas selon le type d’anesthesie. Methodes La precision a ete mesuree selon Cornud (Radiology, 2018) en termes de distance au centre de la cible (dcc, mm) et de profondeur dans la cible (dcs, mm les valeurs negatives montrent que la carotte est dans la cible) sur la base des archives dicom de biopsies guidees par l’image d’anomalies IRM PIRADSv2 ≥ 3 chez des patients en surveillance active ou en reevaluation avant decision therapeutique. Pour des raisons logistiques, nous developpons les biopsies sous anesthesie locale (patch EMLA, 20 mL lidocaine 1 % sc et en bloc periprostatique). Les resultats de 41 dossiers (2 carottes par cible, 82 carottes ; anesthesie generale : 27 patients, anesthesie locale : 14 patients) sont presentes. Resultats Le volume moyen de la cible etait de 0,8 mL (IC95 % : 0,5–1,2), correspondant a une sphere de diametre moyen de 11,6 mm (IC95 % : 9,8–13,2). La precision moyenne (IC95 %) etait de 2,5 (2,2–2,9) mm par rapport au centre de la cible (dcc) et toutes les carottes etaient a l’interieur de la cible (dcs : −2,9 (−3,2/−2,6) mm. La precision n’etait pas degradee par la realisation de l’acte sous anesthesie locale ( Fig. 1 ). Les donnees de 82 carottes tirees de notre serie historique de biopsies transrectales avec fusion elastique (Cornud. Radiology 2018) ont ete utilisees a des fins de comparaison suggerant une meilleure precision (dcc voie transperineale : 2,5 (2,2–2,9) mm contre 5,1 (4,0–6,2) mm, p Conclusion La demonstration faite pour les biopsies transrectales que les systemes permettant la fusion elastique des volumes definis sur l’IRM et lors de l’echographie transrectale ameliorent la precision et la qualite d’echantillonnage des biopsies prostatiques peut etre etendue aux biopsies transperineales. Ces dernieres peuvent etre realisees sous anesthesie locale sans degradation de la precision.
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- 2018
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23. Hypotension and acute pulmonary insufficiency following transfusion of autologous red blood cells during surgery: a case report and review of the literature
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Zahra Mehdizadehkashi, T. Masuno, Kelly M. England, Christopher C. Silliman, F. J. Kim, Marguerite R. Kelher, Ernest E. Moore, R. B. Covin, Daniel R. Ambruso, and Lynn K. Boshkov
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Lung Diseases ,Male ,medicine.medical_specialty ,Blood transfusion ,medicine.medical_treatment ,Autologous blood ,Pulmonary insufficiency ,Host factors ,Adenocarcinoma ,Lung injury ,Blood Transfusion, Autologous ,Postoperative Complications ,medicine ,Humans ,Prostatectomy ,Intraoperative Care ,biology ,business.industry ,Prostatic Neoplasms ,Hematology ,Middle Aged ,medicine.disease ,Surgery ,Respiratory burst ,Anesthesia ,biology.protein ,Hypotension ,Antibody ,Packed red blood cells ,business - Abstract
Transfusion of autologous blood is associated with fewer complications, although all untoward events of transfusion may not be negated with this strategy. We report a case of acute pulmonary insufficiency and hypotension following transfusion of autologous packed red blood cells (PRBCs) in a patient, who was undergoing major surgery. Anti-HLA class-I and class-II and anti-granulocyte antibodies were measured in the unit and in the recipient. Neutrophil (PMN)-priming activity was measured as the augmentation of the formyl-Met-Leu-Phe-activated respiratory burst. No immunoglobulins were identified; however, significant lipid-priming activity was present in the implicated, autologous PRBC unit that primed PMNs from both healthy people and the recipient. In addition, lipids, identical to those that accumulate during PRBC storage, caused significant hypotension when infused into rats at similar concentrations found in stored PRBCs. We conclude that the observed transfusion-related acute lung injury reaction with significant hypotension may be the result of two independent events: the first is related to inherent host factors, in this case major surgery, and the second is the infusion of lipids that accumulate during the routine storage of PRBCs.
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- 2004
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24. Résultats d’une expérience de la résection transurétrale de vessie en-bloc : à propos de 30 patients
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M. Soulié, M.L. Quintyn, Mathieu Roumiguié, B. Covin, B. Malavaud, Jean-Baptiste Beauval, and G. Daniel
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Gynecology ,medicine.medical_specialty ,business.industry ,Urology ,Medicine ,business - Abstract
Objectifs L’objectif etait d’evaluer la faisabilite et les resultats oncologiques a court terme de la resection de tumeur vesicale en-bloc (RTV en-bloc). Methodes Les patients ayant ete reseques en monobloc ont ete inclus. Les donnees concernant l’âge, le sexe, les antecedents de tumeur vesicale, le stade tumoral, les complications (classification de Clavien-Dindo) ont ete recueillies de facon retrospective. Les 2 operateurs avaient la meme technique operatoire avec une resection bipolaire a l’anse de resection 12°. Une incision circulaire etait faite autour de la tumeur, avec une marge de 5 a 10 mm. Resultats Entre novembre 2014 et octobre 2015, 30 patients ont eu une RTV en-bloc. Seize patients avaient un antecedent de tumeur vesicale. Le nombre median de blocs etait de 2 (min 1–max 6). La taille mediane des tumeurs etait de 1,5 cm (0,5–8). Il s’agissait le plus souvent de pTa ( n = 15, 50 % des cas) de bas grade ( n = 12). Le muscle etait vu chez 26 patients (86,6 %). Six patients etaient pT2 (20 %). La duree mediane d’hospitalisation (j − 1 compris) etait de 3 jours (2–15). Dix pour cent ( n = 3) des patients ont presente une complication (2 patients IIIb, avec transfusion et reprise chirurgicale ; V : deces sur cardiopathie ischemique avec double antiagregation plaquettaire). Le suivi median etait de 7,7 mois (3,7–16,10) ; 40 % ( n = 12) ont recidive dans un delai median de 6,7 mois (4,1–7,1). Conclusion Cette etude portant sur le debut d’une experience de RTV en-bloc montre une bonne faisabilite de cette technique, mais doit etre confirme par une etude de plus haut niveau de preuve. Une etude sur les avantages histologiques de cette resection en-bloc est en cours.
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- 2016
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25. Factors Affecting Transfusion of Fresh Frozen Plasma, Platelets, and Red Blood Cells During Elective Coronary Artery Bypass Graft Surgery
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Randal B. Covin, Gulshan K. Sethi, Gary K. Grunwald, Chitra Rajagopalan, Bradley B. Brimhall, A. Laurie Shroyer, Maureen M. O’Brien, William Reiquam, and Steven Walczak
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Male ,medicine.medical_specialty ,Hospitals, Veterans ,medicine.medical_treatment ,Blood Loss, Surgical ,Platelet Transfusion ,Pathology and Forensic Medicine ,Plasma ,Predictive Value of Tests ,Risk Factors ,Angioplasty ,Blood Component Transfusion ,Preoperative Care ,Blood plasma ,medicine ,Humans ,Blood Transfusion ,Platelet ,Coronary Artery Bypass ,Veterans Affairs ,business.industry ,General Medicine ,Middle Aged ,Surgery ,Medical Laboratory Technology ,Red blood cell ,Logistic Models ,medicine.anatomical_structure ,Elective Surgical Procedures ,Anesthesia ,Multivariate Analysis ,Female ,Fresh frozen plasma ,Erythrocyte Transfusion ,business ,Artery - Abstract
Context.—The ability to predict the use of blood components during surgery will improve the blood bank's ability to provide efficient service. Objective.—Develop prediction models using preoperative risk factors to assess blood component usage during elective coronary artery bypass graft surgery (CABG). Design.—Eighty-three preoperative, multidimensional risk variables were evaluated for patients undergoing elective CABG-only surgery. Main Outcome Measures.—The study endpoints included transfusion of fresh frozen plasma (FFP), platelets, and red blood cells (RBC). Multivariate logistic regression models were built to assess the predictors related to each of these endpoints. Setting.—Department of Veterans Affairs (VA) health care system. Patients.—Records for 3034 patients undergoing elective CABG-only procedures; 1033 patients received a blood component transfusion during CABG. Results.—Previous heart surgery and decreased ejection fraction were significant predictors of transfusion for all blood components. Platelet count was predictive of platelet transfusion and FFP utilization. Baseline hemoglobin was a predictive factor for more than 2 units of RBC. Some significant hospital variation was noted beyond that predicted by patient risk factors alone. Conclusions.—Prediction models based on preoperative variables may facilitate blood component management for patients undergoing elective CABG. Algorithms are available to predict transfusion resources to assist blood banks in improving responsiveness to clinical needs. Predictors for use of each blood component may be identified prior to elective CABG for VA patients.
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- 2003
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26. Wegener's Granulomatosis in the Elderly
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Sonja S. Krafcik, Robert G. Sitrin, Randal B. Covin, and Joseph P. Lynch
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Male ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Pediatrics ,Respiratory Tract Diseases ,Comorbidity ,Critical Care and Intensive Care Medicine ,Prednisone ,medicine ,Humans ,Adverse effect ,Sinusitis ,Cyclophosphamide ,Glucocorticoids ,Aged ,Retrospective Studies ,business.industry ,Incidence (epidemiology) ,Mortality rate ,Granulomatosis with Polyangiitis ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Surgery ,Otitis ,Female ,Kidney Diseases ,Nervous System Diseases ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Immunosuppressive Agents ,medicine.drug - Abstract
To determine if elderly patients with Wegener's granulomatosis (WG) exhibit distinctive clinical features or outcomes compared with patients whose conditions were diagnosed at younger ages.Retrospective cohort study.University medical center.Thirty-three patients with WG diagnosed when 60 years old or older and 34 patients with WG diagnosed at age younger than 60 years, identified by record review of all WG patients seen over an 11-year period.The prevalence of specific clinical features, progression to end-stage renal disease, mortality rate, and infectious and noninfectious complications of therapy were examined. The prevalence of upper respiratory tract involvement (rhinitis, sinusitis, otitis, epistaxis) and hemoptysis were significantly less common as initial manifestations in the elderly patients, although pulmonary infiltrates were seen more commonly during the course of their disease. Renal insufficiency was more common at the time of diagnosis in the elderly patients (64% vs 35%; p0.05). Most notably, CNS involvement was 4.5-fold more common in elderly patients (27% vs 6%; p = 0.02). The overall incidence of infectious and noninfectious complications of therapy was similar between the groups, although the mortality rate was markedly higher in the elderly patients (54% vs 19%; p0.01). Almost all deaths were due to overwhelming infection.Elderly patients with WG present with distinctive clinical features, particularly a relatively low incidence of upper respiratory tract complaints and a high incidence of CNS involvement. The mortality risk from infectious complications of WG is substantially higher in elderly patients, although this cannot be attributed directly to adverse affects of therapy.
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- 1996
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27. Acute hemolytic transfusion reaction caused by anti-Coa
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R B, Covin, K S, Evans, R, Olshock, and H W, Thompson
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Coa is a high-frequency blood group antigen in the Colton blood group system expressed on red blood cells (RBCs) of approximately 99.8 percent of random persons. Anti-Coa has been reported to cause delayed hemolytic transfusion reactions, hemolytic disease of the newborn, and accelerated clearance of RBCs in vivo. Acute hemolytic transfusion reactions (AHTRs) have not previously been reported. A 58-year-old man was hospitalized for vascular surgery. Initial blood bank evaluation revealed anti-Fya. The patient received six units of RBCs during his initial hospitalization and developed anti-E. A subsequent sample was sent to the reference laboratory when all units of RBCs appeared incompatible. Additional studies, including alloadsorptions, revealed the presence of anti-E, anti-Fya, and an apparent warm autoantibody. One unit of least-incompatible RBCs was transfused during surgery. The patient had an increase in temperature. Hemoglobinuria and a decrease in hematocrit were also noted. Due to the clinical impression of an AHTR, the pre- and postreaction samples were reevaluated in the reference laboratory and demonstrated the presence of anti-Coa in both. Based on clinical and laboratory evaluation this patient appears to have had an AHTR due to anti-Coa. This is the first known reported case of an AHTR caused by anti-Coa.
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- 2004
28. Upper-extremity deep venous thrombosis complicating whole-blood donation
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R B, Covin, N L, Rich, and Agnes, Aysola
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Adult ,Upper Extremity ,Venous Thrombosis ,Risk Factors ,Humans ,Thrombophilia ,Blood Donors ,Female ,Enoxaparin ,Contraceptives, Oral, Sequential - Abstract
Up to 36 percent of blood donors may experience a donation-related complication. Fatigue, bruises, hematomas, and vasovagal reactions comprise the great majority of donor reactions and injuries. Serious complications are rare.A 20-year-old female taking the third-generation oral contraceptive desogestrel/ethinyl estradiol and ethinyl estradiol (Mircette) developed bruising and increased pain and swelling of her right arm over a 5-day period after whole-blood donation. She was a first-time donor and the venipuncture was reported as being mildly traumatic. There was no personal or family history of thrombosis.Ultrasound examination of her upper extremity revealed the presence of a deep venous thrombosis that required treatment with enoxaparin sodium for 5 days and warfarin for 6 months. Evaluation for thrombophilia was negative. The only risk factor for thrombosis was use of oral contraceptives.Although serious complications from whole-blood donation are rare, they may occur. Deep venous thrombosis should be considered in a donor presenting with increasing pain and swelling after blood donation.
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- 2004
29. Altered expression and localization of 5-lipoxygenase accompany macrophage differentiation in the lung
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Thomas G. Brock, Marc Peters-Golden, Marc B. Bailie, and Randal B. Covin
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Pulmonary and Respiratory Medicine ,Physiology ,Cell Separation ,Lipoxygenase ,chemistry.chemical_compound ,Physiology (medical) ,medicine ,Centrifugation, Density Gradient ,Macrophage ,Animals ,Rats, Wistar ,Lung ,Leukotriene ,Arachidonate 5-Lipoxygenase ,biology ,Cell Differentiation ,Cell Biology ,Immunohistochemistry ,Cell biology ,Rats ,Pulmonary Alveoli ,medicine.anatomical_structure ,Biochemistry ,Eicosanoid ,chemistry ,Arachidonate 5-lipoxygenase ,biology.protein ,Alveolar macrophage ,Arachidonic acid ,Female ,Pulmonary alveolus - Abstract
The alveolar macrophage (AM) exhibits a greater capacity to synthesize bioactive leukotrienes from arachidonic acid than does its circulating precursor the peripheral blood monocyte. Macrophage differentiation in the lung entails cellular residence within both the pulmonary interstitial and alveolar compartments. In the present study, we sought to determine 1) whether this enhanced metabolic activity was acquired during maturation within the alveolar space and 2) the underlying mechanisms responsible for this upregulation. Rat AMs were separated by Percoll gradient centrifugation into four density-defined subpopulations thought to reflect their degree of maturation. On stimulation with a calcium ionophore, synthesis of leukotriene B4increased with the degree of maturation, although it was diminished in the oldest subpopulation. This maturation-dependent upregulation was not explained by increases in arachidonic acid release but was associated with increased expression of 5-lipoxygenase (5-LO) protein as determined by immunoblot analysis. Whereas 5-LO is primarily cytosolic in monocytes, it is known to be primarily intranuclear in unfractionated AMs. Here, the localization of 5-LO was investigated by immunofluorescence microscopy and was found to be predominantly nuclear in all AM subpopulations; by contrast, the protein was cytosolic in interstitial macrophages isolated by mechanical and enzymatic lung digestion. These divergent localization patterns in AMs and interstitial macrophages were verified in situ by immunohistochemical staining of sections of normal rat lung. When unfractionated AMs were isolated and maintained in culture for 3 days, a shift in 5-LO distribution from nucleus to cytosol was observed. We conclude that 1) nuclear import of 5-LO occurs within the alveolar space and is reversible on removal from the alveolar milieu and 2) leukotriene synthetic capacity increases further during AM residence within the alveolar space as a result of a progressive increase in the amount of 5-LO protein.
- Published
- 1998
30. Book Reviews
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Donna D. Castellone, Susan R. Besaw, and Randal B. Covin
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Biochemistry (medical) ,Clinical Biochemistry - Published
- 1998
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31. Gallstone ileus 30 years after cholecystectomy and hepaticojejunostomy.
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Todd C, Wong R, Covin B, and Keith S
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- Humans, Cholecystectomy adverse effects, Anastomosis, Surgical, Gallstones diagnostic imaging, Gallstones surgery, Biliary Tract Surgical Procedures, Intestinal Obstruction surgery, Ileus diagnostic imaging, Ileus etiology
- Abstract
Gallstone ileus occurs when the small or large intestine is obstructed by a gallstone and is a rare occurrence in a post-cholecystectomy patient. Non-specific clinical symptoms and inconsistent imaging results often lead to a delay in diagnosis. Complex anatomy, such as a Roux-en-Y biliary-enteric anastomosis, can increase the risk of stone formation and further confound a potential case of gallstone ileus. Here, we present a rare case of gallstone ileus at the anastomosis site of a Roux-en-Y hepaticojejunostomy done 30 years prior for a common bile duct injury during a cholecystectomy. The possibility of negative CT findings, pattern of presentation on imaging as intussusception, and potential pathomechanism of gallstone formation in post-cholecystectomy patients are discussed. Through this case and review of similar cases, we emphasise the need for further study of post-cholecystectomy gallstone ileus and the importance of clinical suspicion during diagnosis., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2023. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2023
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32. Managing Discordant Findings Between Multiparametric Magnetic Resonance Imaging and Transrectal Magnetic Resonance Imaging-directed Prostate Biopsy-The Key Role of Magnetic Resonance Imaging-directed Transperineal Biopsy.
- Author
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Bajeot AS, Covin B, Meyrignac O, Pericart S, Aziza R, Portalez D, Graff-Cailleaud P, Ploussard G, Roumiguié M, and Malavaud B
- Subjects
- Humans, Image-Guided Biopsy methods, Magnetic Resonance Imaging methods, Male, Prostate diagnostic imaging, Prostate pathology, Ultrasonography, Interventional methods, Multiparametric Magnetic Resonance Imaging, Prostatic Neoplasms diagnostic imaging, Prostatic Neoplasms therapy
- Abstract
Background: Discordant findings between multiparametric magnetic resonance imaging (mpMRI) and transrectal image-guided biopsies of the prostate (TRUS-P) may result in inadequate risk stratification of localized prostate cancer., Objective: To assess transperineal image-guided biopsies of the index target (TPER-IT) in terms of disease reclassification and treatment recommendations., Design, Setting, and Participants: Cases referred for suspicion or treatment of localized prostate cancer were reviewed in a multidisciplinary setting, and discordance was characterized into three scenarios: type I-negative biopsies or International Society of Urological Pathology (ISUP) grade 1 cancer in Prostate Imaging Reporting and Data System (PI-RADS) ≥4 index target (IT); type II-negative biopsies or ISUP grade 1 cancer in anterior IT; and type III-<3 mm stretch of cancer in PI-RADS ≥3 IT. Discordant findings were characterized in 132/558 (23.7%) patients after TRUS-P. Of these patients, 102 received reassessment TPER-IT., Outcome Measurements and Statistical Analysis: The primary objective was to report changes in treatment recommendations after TPER-IT. Therefore, cores obtained by primary TRUS-P and TPER-IT were analyzed in terms of cancer detection, ISUP grade, and Cambridge Prognostic Group classification using descriptive statistics., Results and Limitations: TPER-IT biopsies that consisted of fewer cores than the initial TRUS-P (seven vs 14, p < 0.0001) resulted in more cancer tissue materials for analysis (56 vs 42.5 mm, p = 0.0003). As a result, 40% of patients initially considered for follow-up (12/30) and 49% for active surveillance (30/61) were reassigned after TPER-IT to surgery or intensity-modulated radiotherapy., Conclusions: Nonconcordance between pathology and imaging was observed in a significant proportion of patients receiving TRUS-P. TPER-IT better informed the presence and grade of cancer, resulting in a significant impact on treatment recommendations. A multidisciplinary review of mpMRI and TRUS-P findings and reassessment TPER-IT in type I-II discordances is recommended., Patient Summary: In this report, patients with suspicious imaging of the prostate, but no or well-differentiated cancer on transrectal image-guided -biopsies, were offered transperineal image-guided biopsies for reassessment. We found that a large share of these had a more aggressive cancer than initially suspected. We conclude that discordant results warrant reassessment transperineal image-guided biopsies as these may impact disease risk classification and treatment recommendations., (Copyright © 2021 European Association of Urology. Published by Elsevier B.V. All rights reserved.)
- Published
- 2022
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33. Migration of an abdominal mesh into a reconstructed ileal neobladder, diagnosis and management: A case report.
- Author
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Zgheib J, Roumiguie M, Soulie M, Covin B, and Huyghe E
- Abstract
Migration of an abdominal mesh is a very rare complication. Few reports have described migrations to the bowels and to the urinary bladder but none reported the migration into an ileal bladder. This case report describes an extremely rare but possible migration of abdominal mesh into the lumen of the neobladder. We present a case of a 65 year old male patient who had an abdominal mesh migration into a reconstructed ileal neobladder. The management was done over two parts with endourology laser assistance and open approach. The report shows the possible causes and ways of management of this complication.
- Published
- 2019
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34. Refining the risk-stratification of transrectal biopsy-detected prostate cancer by elastic fusion registration transperineal biopsies.
- Author
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Covin B, Roumiguié M, Quintyn-Ranty ML, Graff P, Khalifa J, Aziza R, Ploussard G, Portalez D, and Malavaud B
- Subjects
- Aged, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Neoplasm Grading, Perineum, Prostate surgery, Prostatectomy, Prostatic Neoplasms surgery, Risk Assessment, Tumor Burden, Ultrasonography, Image-Guided Biopsy methods, Prostate diagnostic imaging, Prostate pathology, Prostatic Neoplasms diagnostic imaging, Prostatic Neoplasms pathology
- Abstract
Purpose: To evaluate image-guided Transperineal Elastic-Registration biopsy (TPER-B) in the risk-stratification of low-intermediate risk prostate cancer detected by Transrectal-ultrasound biopsy (TRUS-B) when estimates of cancer grade and volume discorded with multiparametric Magnetic Resonance Imaging (MRI)., Methods: All patients referred for active surveillance or organ-conservative management were collegially reviewed for consistency between TRUS-B results and MRI. Image-guided TPER-B of the index target (IT) defined as the largest Prostate Imaging-Reporting Data System-v2 ≥ 3 abnormality was organized for discordant cases. Pathology reported Gleason grade, maximum cancer core length (MCCL) and total CCL (TCCL)., Results: Of 237 prostate cancer patients (1-4/2018), 30 were required TPER-B for risk-stratification. Eight cores were obtained [Median and IQR: 8 (6-9)] including six (IQR: 4-6) in the IT. TPER-B of the IT yielded longer MCCL [Mean and (95%CI): 6.9 (5.0-8.8) vs. 2.6 mm (1.9-3.3), p < 0.0001] and TCCL [19.7 (11.6-27.8) vs. 3.6 mm (2.6-4.5), p = 0.0002] than TRUS-B of the gland. On TPER-B cores, longer MCCL [Mean and (95%CI): 8.7 mm (6.7-10.7) vs. 4.1 mm (0.6-7.6), p = 0.002] were measured in Gleason score-7 cancers. TPER-B cores upgraded 13/30 (43.3%) patients. 14/30 (46.7%) met University College London-definition 1 and 18/30 (60.0%) definition 2, which correlate with clinically significant cancers > 0.5 mL and > 0.2 mL, respectively. 7/16 (43.8%) patients under active surveillance were re-allocated toward prostatectomy (n = 5) or radiation therapy (n = 2). In 14 patients not yet assigned, TPER-B risk-stratification spurred the selection (13/14, 92.9%) of treatments with curative intent., Conclusion: Image-guided TPER-B of the index target provided more cancer material for pathology. Subsequent re-evaluation of cancer volume and grade switched a majority of patients towards higher-risk groups and treatments with curative intent.
- Published
- 2019
- Full Text
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