Urinary retention secondary to ovarian dysgerminoma in a girl

A thirteen-year-old girl sought medical advice because of a markedly weakened urinary stream with severe hesitancy. She was referred to the pediatric clinic because of 3 episodes of acute urinary retention during a previous month. Pelvic examination showed a retrovesical tumor. An excretory urogram revealed bilateral ureterectasis and pyelocalicectasis. Two weeks after left nephrostomy, surgical exploration demonstrated a right ovarian mass causing compression of the left ureter and obstruction of the bladder neck. Excision of the tumor was performed without difficulty, following which the patient resumed normal voiding. The resected tumor weighed 815 Gm and pathologic examination showed dysgerminoma. Postoperatively the following two and one half years were uneventful.