[Renal medullary carcinoma, a new clinico-pathological entity. Immunohistochemical, ultrastructural, flow cytometric and cytogenetic study of a case]. / Le carcinome médullaire du rein, une nouvelle entité anatomo-clinique. Etude immunohistochimique, ultrastructurale, en cytométrie de flux et cytogénétique d'un cas.

The renal medullary carcinoma is a rare tumor. We report a case in a black patient with sickle cell trait. The tumor was located in the lower pole of the left kidney. It had a tubular and microcystic architecture. It was composed of large eosinophilic cells with vesicular nuclei containing prominent nucleoli, in a desmoplastic and inflammatory stroma. By immunohistochemistry, the tumoral cells were positive for cytokeratin and Ulex europaeus lectin. Electron microscopy revealed small intracytoplasmic lumina with microvilli. The flow cytometric study showed DNA-multiploidy. The cytogenetic study revealed tetraploidy without structural abnormality. The renal medullary carcinoma is often reported in young black patients with sickle cell trait. Its microscopic, immunohistochemical and ultrastructural features favor its identification as a particular variety of Bellini duct carcinoma. Its link with sickle cell trait has to be defined.

[Advances in surgical techniques and results of radical cystectomies for bladder cancer. 106 patients]. / Evolution des techniques chirurgicales et résultats des cystectomies à visée curative pour cancer de vessie. A propos de 106 patients.

AIM OF THE STUDY: Retrospective analysis of result of radical cystectomy at Cochin Hospital. PATIENTS AND METHODS: We report the results of a 106 patients series treated by radical cystectomy for bladder carcinoma after a 5-year period follow-up. RESULTS: The extent of the tumour invasion according to pathological analysis was: pT1 or less: 26%, pT2 and pT3a: 33%, pT3b and over: 41%. Morbidity rate was 19% with a 7.5% reintervention rate. Long term complication rate was 31%, concerning essentially ureteral stenosis. A local recurrence or distant metastasis occurred in 35% of patients. Local recurrence rate was 10.7%. Cancer specific survival rates were 88%, 81% and 42% for pT1, pT2-pT3a, and pT3b patients respectively. CONCLUSION: The present results confirm that radical cystectomy is the most effective curative treatment for invasive bladder carcinoma.