Abdominal Supernumerary Testis Complicated by Yolk Sac Tumor.

We describe a case of a 26-year man with complaints of suprapubic pain and burning micturition for two weeks and intermittent hematuria for two months. On physical examination, there was palpable mobile pelvic mass measuring 10x10 cm. Both testes were palpable in the scrotum. CT scan abdomen revealed well-defined, soft tissue mass, about 11x10 cm between rectum and urinary bladder. Mass showed internal necrotic changes and enhancement along the walls. No calcification was seen. Exploratory laparotomy was done. Tumour mass was nodular tissue weighing 194 gm. Diagnosis was confirmed histologically showing yolk sac tumor. Postoperatively, tumour markers were normal. MRI pelvis revealed no residual tumor.