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      Carcinome du tube collecteur de Bellini: une nouvelle observation avec revue de la littérature Translated title: Bellini duct carcinoma: a new case study and literature review

      case-report

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          Abstract

          Le carcinome du tube collecteur de Bellini est un type très rare des carcinomes à cellules rénales (CCR), sa fréquence est inférieure à 1%. Il dérive de la partie distale du néphron, plus précisément du tube collecteur. Ses aspects morphologiques sont extrêmement variables, rendant son diagnostic difficile. Nous rapportons le cas d'un patient âgé de 62 ans admis pour une tuméfaction non douloureuse du flanc gauche, d’apparition progressive. La tomodensitométrie a objectivé une énorme masse, occupant la partie supérieure du rein gauche. Le malade avait bénéficié d’une néphrectomie élargie. L’examen anatomo-pathologique avait objectivé un carcinome des tubes collecteurs du rein. L’évolution est exceptionnellement favorable: pas de récidives, pas de métastases locorégionales et pas de métastases à distance.

          Translated abstract

          Bellini duct carcinoma is a very rare type of renal cell carcinoma (RCC), accounting for less than 1%. It arises from the distal nephron, more specifically from the collecting duct. Its morphological features are extremely variable, making its diagnosis difficult. We report the case of a 62-year old patient admitted with a painless progressive left flank swelling. CT scan showed a huge mass occupying the upper portion of the left kidney. The patient underwent radical nephrectomy. Anatomopathological examination showed collecting duct carcinoma of the kidney. Patient’s evolution was exceptionally favorable: no recurrence, no locoregional metastasis and no distant metastasis.

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          Most cited references13

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          Papillary renal cell carcinoma: a clinical, radiologic, and pathologic study of 34 cases.

          Papillary renal cell carcinoma (RCC) is known by its tendency to avascularity by angiography; however, data concerning its clinicopathologic spectrum and prognosis are not available. In a review of 224 renal cell carcinomas accesioned in our files, 34 were found to be papillary and 190 of other histologic types. A comparative analysis of these two gropus revealed marked differences. The majority of papillary tumors (85.3%) were in pathologic stage I, whereas more than half of the nonpapillary tumors had extended beyond the limits of the kidney. Follow-up data revealed that the survival for papillary RCC was significantly higher than that for nonpapillary tumors. This difference held true even when tumors in the same pathologic stage were compared. Many papillary tumors, particularly those with a favorable course, were massively necrotic, densely infiltrated by macrophages, or both. In view of these findings, the possibility that host mechanisms are involved in destruction and confinement of the tumor is discussed. Examination of kidney tissue distant from the tumor disclosed, in some cases, atypical hyperplastic changes of collecting tubules; this raises the possibility that some papillary tumors arise from distal tubular epithelium. Hypo- or avascularity was present in all papillary RCC's studied by angiography.
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            Urological complications in 1,000 consecutive renal transplant recipients.

            The urological complications in the first consecutive 1,000 renal transplants at our transplant center are reported with a minimum followup of 12 months. The kidney was implanted in the iliac fossa in all cases and in all but 3 the ureter was inserted into the bladder with a Politano-Leadbetter technique. Overall, there were 71 primary complications in 68 patients (7.1%), which included 36 ureteral obstructions, 25 ureteral or bladder leaks (including ureteral necrosis), 7 bladder outflow obstructions, 2 ureteral stones and 1 case of symptomatic vesicoureteral reflux. The use of high dose steroids in the early years was associated with a 10% urological complication rate, which decreased to 4% in patients receiving low dose steroids thereafter combined with azathioprine or cyclosporine. The urological complication was corrected after 1 procedure in 65 cases and after 2 procedures in 4. No grafts were lost due to urological complications. Two patients died, 1 of sepsis following transurethral resection of the prostate and subsequent ureteral necrosis, and 1 of hemorrhage following nephrostomy tube insertion. Most ureteral complications were treated by an open operation, although in recent years endoscopic techniques have become more common. Meticulous retrieval technique, low dose steroid protocols and rapid diagnosis are the crucial factors associated with a minimal incidence of urological complications after renal transplantation.
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              Management of renal collecting duct carcinoma: a systematic review and the McMaster experience.

              Collecting duct carcinoma (cdc) is a rare, aggressive form of renal carcinoma that presents at an advanced stage and has a poor prognosis. Little is known concerning the optimal management of cdc. We present the results of a systematic review addressing the management of cdc and the McMaster University cdc series.
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                Author and article information

                Journal
                Pan Afr Med J
                Pan Afr Med J
                PAMJ
                The Pan African Medical Journal
                The African Field Epidemiology Network
                1937-8688
                04 July 2017
                2017
                : 27
                : 166
                Affiliations
                [1 ]Service d’Urologie, Hôpital Militaire d’Instruction Mohammed V, Rabat, Maroc
                Author notes
                [& ]Corresponding author: Abdessamad El Bahri, Service d’Urologie, Hôpital Militaire d’Instruction Mohammed V, Rabat, Maroc
                Article
                PAMJ-27-166
                10.11604/pamj.2017.27.166.9271
                5579414
                dcb49609-8e31-4d7e-b8c9-d221fd0e4fe1
                © Abdessamad El Bahri et al.

                The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 06 March 2016
                : 12 June 2017
                Categories
                Case Report

                Medicine
                rein,cancer,tubes collecteurs,kidney,collecting ducts
                Medicine
                rein, cancer, tubes collecteurs, kidney, collecting ducts

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