[Obstructive uropathy in Gardner's syndrome. Intra-abdominal desmoid tumor].

Desmoid tumours are benign neoplasias manifesting themselves clinically as aggressive fibromatoses. They may be sited both in mesenteric and retroperitoneal fat. Owing to the great size they reach and to their local infiltrative character they occasionally lead to the development of intestinal occlusive syndromes and, in exceptional cases, to obstructive uropathy of the upper urinary tract. Their incidence of presentation in the general population is low, however they develop more frequently in patients suffering from colonic polyposis in the family and they form part of the extracolonic manifestations of Gardner's syndrome. In 1987 we treated a young patient, a genetic carrier of familiar colonic polyposis who had presented relapse of a previous desmoid. The location of the tumour in narrow pelvis made its clinical debut as a intestinal pseudo-occlusion and determined a bilateral ureteral obstruction and the formation of a major urinoma. The joint utilization of instrumental maneuvers and surgical approaches enabled us to solve the intestinal and urological commitment satisfactorily. We carry out an overall review and analyse the data published on the incidence, prognosis and treatment of obstructive uropathy in Gardner's syndrome. We also carry out an updating on the biology of the desmoid tumour.