[Ureteral compression by mesenteric desmoid tumor. Report of 2 cases].

The authors report two cases of abdominal fibromatosis corresponding to Gardner's syndrome, causing hydronephrosis by extrinsic ureteric compression in young men in whom any form of surgical resection would have been in vain. These cases of ureteric compression were treated endoscopically by placement of a double J ureteric stent associated with treatment by tamoxifen in one case and sulindac in the other, with apparent stabilization of the disease. The two patients are regularly followed in the department with ureteric stent replacement two to three times a year.