Testicular pure teratomaの1例

Abstract

症例は46歳男性.交通事故で近医に入院し, 右陰嚢部の有痛性腫脹を認めた.抗生剤投与でも改善を認めないため当科を受診した.右精巣上体炎及び右精巣腫瘍の疑いで手術目的で入院した.右高位精巣摘除術を施行した.病理組織診断で腫瘍は皮膚附属器・軟骨・骨・脂肪組織を伴った成熟組織成分からなり, 毛髪も大量に認められたが, 他の精巣腫瘍の組織成分は認めず, 単一組織型のpure mature teratomaと診断した.病理組織からも精巣上体炎の存在が確認された.術後経過は良好で術後10日で退院した.術後6ヵ月を経過した現時点で再発は認められない

A 46-year-old man visited our hospital, complaining of fever and painful swelling of the right scrotum contents. The symptoms and signs suggested epididymitis, but testicular tumor could not be excluded. Therefore, high inguinal orchiectomy was performed. Macroscopic findings were compatible with the testicular teratoma, containing hair, and epididymitis. Histological findings revealed that the tumor was composed of mature epidermis with skin appendages, cartilage, hair, bone and adipose tissue, and that many leucocytes infiltrated in the epididymis, resulting in the diagnosis of pure mature teratoma with epididymitis. For 6 months after the operation, no evidence of recurrence has been observed. Despite its histologically benign appearance, primary pure teratoma of the testis has a metastatic and recurrent potential. Therefore, primary pure teratoma should be man aged in the same way as other nonseminomatous germ cell tumors.