ASYNCHRONOUS BILATERAL HYDRONEPHROSIS CAU SED BY RETROPERITONEAL FIBROSIS AND WITH 44 MONTHS BETWEEN THE 2 OCCURRENCES

The case of a man, now aged 53 years, with bilateral, asynchronous (44 months apart) hydronephrosis caused by retroperitoneal fibrosis is re ported, A review of the literature with reference to the reported side effects of H2-antagonists (which the patient had taken immediately be fore developing the hydronephrosis) does not reveal any definite relat ion between the disease and these drugs, Stenosis and medialization of the middle third of the ureter (mostly bilateral) should suggest retr operitoneal fibrosis to the urologist, as early surgical treatment is mandatory to preserve renal function. Postoperatively, immunosuppressi on for at least 6 months is highly recommended to prevent recurrence.