Abstract
A 38-year-old man was admitted to the hospital because of a lower abdominal mass. He was operated on twice for Hirschsprung disease in infancy and underwent right testectomy for right undescended testis in later childhood. Serum β-HCG level was high. 3D-CT-angiography revealed the possibility that the feeding artery was the right testicular artery. But the past history denied the possibility of a testicular tumor. We operated for the abdominal tumor of unknown origin. During the operation, we found a large tumor that looked like a testis, which was covered with retroperitneum and we identified the testicular cord, the epididymis and the gubernaculums testis. The pathological examination revealed uniform pattern seminoma. He has remained in good health without recurrence 12 months after the operation. There were 10 case reports of adult abdominal seminoma, including this case, so far in Japan. However, there were no other cases after testectomy, except this case. We report this case along with an analysis of 10 other case reports.
