一位84歲男性病人以陰囊腫大合併血清胎兒蛋白升高為表現且無胃腸不適症狀，其P-SA及β-HCG皆正常且無病毒性肝炎病史；陰囊超音波發現一個左側睪丸約2公分大小的腫瘤及右側睪丸約1公分大小的腫瘤，腹部超音波發現一個大型的左肝腫瘤。患者接受了雙側睪丸切除手術，組織病理檢查發現左側睪丸腫瘤是由肝癌轉移而來。腺癌轉移至睪丸相當的罕見，就我們所知，肝細胞癌轉移至睪丸在文獻上僅有二例報告，本文報告此病例的臨床及病理特徵並作一簡短之文獻回顧。

An 84-year-old man presented with an enlarged scrotum. He had no gastrointestinal complaints. Scrotal ultrasonography showed a 2-cm left testicular mass and a 1-cm mass on the right. The serum PSA and β-HCG were in the normal range, but his AFP level was very high. Abdominal ultrasonography revealed a huge tumor in the left lobe of liver. A bilateral orchiectomy was performed, and pathology examination demonstrated hepatocellular carcinoma metastatic to the left testis. Adenocarcinoma from any source very rarely metastasizes to the testis. We found only two reports of hepatocellular carcinoma with testicular metastases in the English literature.