An unusual case of traumatic urethro-cavernous fistula from the fall of a heavy object upon the flaccid penis is described. In the absence of clinical evidence of urinary extravasation, prompt performance of corpus cavernosography helped detect the existence of such a fistulous communieation. Institution of prompt suprapubic urinary diversion avoided occurrence of undesirable sequelae to intracorporeal urinary leak and ensured uncomplicated spontaneous closure of the fistula.