[Scrotal oedema in a kidney graft recipient].

A 54-year old man received a cadaveric renal allograf for end-stage renal disease due to membranous nephropathy. The patient developed scrotal oedema, 14 days after renal transplantation. The biochemical analysis of scrotal fluid after surgical drainage demostrated urine. Helical computed tomography was performed and it showed contrast leaks in medial, distal ureter and bladder. The urinary fistula was treated with surgical repairment and catheter endoluminal of ureter which was retired in four weeks. The incidence of urinary fistula ranged from 3 to 9%. The scrotal or perineal oedema is unusual clinical presentation of urinary leaks. The diagnosis of urinary fistula may be difficult and depends on a high degree of clinical suspicion. The helical computed tomography is a technique which allows a high resolution three-dimensional reconstruction and it can be used to make the diagnosis of urinary fistula.