title: [Isolated vesical localization of malignant B-cell lymphoma of low malignancy].
abstract: Primary malignant lymphoma of the bladder is infrequent and usually has a low malignancy, with a possibility of long-lasting remission. Our case is that of a 73-year-old woman who presented with a tumor of the bladder revealed by hematuria. She was treated with incomplete endoscopic resection, which showed that the lesion was a B cell lymphoma. After a complementary 60-Gy radiation therapy, remission was complete at 6 months. The histological and immunological study showed the lymphomatous proliferation infiltrating the chorion and the expression of the usual B-lymphocytic markers by the tumoral cells. Lymphoma of the bladder was described for the first time in 1885, and only a few small series of vesical lymphomas have been published since then. The prognosis is usually favorable owing to long-lasting remission. Complete surgical resection does not improve the results, and radiation therapy is the treatment of choice.
authors.affiliation: Laboratoire d'Anatomie et Cytologie Pathologiques, CHG, Longjumeau.
authors.forename: J N
authors.initials: JN
authors.lastname: Faucher
authors.forename: N
authors.initials: N
authors.lastname: Thiounn
authors.forename: P
authors.initials: P
authors.lastname: Galian
mesh_terms: D000368:Aged; D003131:Combined Modality Therapy; D004724:Endoscopy / Q000379:methods; D005260:Female; D006417:Hematuria / Q000209:etiology; D006801:Humans; D016393:Lymphoma, B-Cell / Q000150:complications / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery; D001749:Urinary Bladder Neoplasms / Q000150:complications / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery
vernacular_title: Localisation vésicale isolée d'un lymphome malin B de faible malignité.