[A case of pedunculated hepatoma suspected of adrenal tumor]

We herein report a case of pedunculated hepatoma which was preoperatively diagnosed as nonfunctioning adrenal tumor. A 51-year-old man was admitted for further examination of right hypochondrial pain. CT scan showed a right suprarenal mass. Tumor vessels were visualized on selective right renal arteriography and right inferior phrenic arteriography. Adrenal function was normal. Preoperative diagnosis was nonfunctioning right adrenal tumor. On operation, we found a right suprarenal tumor which was in continuity with the inferior part of the liver. Pathological diagnosis of the biopsy specimen was hepatocellular carcinoma (Edmondson's grade 3). Difficulty of preoperative diagnosis of pedunculated hepatoma is discussed.