Abdominal inflammatory pseudotumor presenting with massive ascites

A boy who presented with massive ascites was found to have tumors involving the urinary bladder, omentum, and retroperitoneum. Laparotomy demonstrated inflammatory pseudotumors. The patient was managed by partial excision of the tumors and chemotheraphy. Abdominal ultrasound and computed tomography at 4-month follow-up showed complete resolution of the tumors and no ascites.