甲状腺へ単独転移をきたした腎細胞癌の1例

Solitary Metastasis of Renal Cell Carcinoma to Thyroid:Report of a Case

　はじめに

　甲状腺の転移性悪性腫瘍は，悪性腫瘍の剖検例中には比較的多く見られるが，甲状腺の手術例中には非常に稀である。

　われわれは，腎摘後8年目に甲状腺へに単独転移をきたした腎細胞癌症例を経験したので，若干の文献的考察を加えて報告する。

A rare case of renal cell carcinoma metastasiz-ed to the thyroid 8 years after the removal of primary tumor was presented. A 61-year-old female complained of an abnormal mass in the neck. The right lobe of the thyroid was resected, and histo-pathologial examination revealed a clear cell car-cinoma. Immunohistochemical examination ruled out a primary carcinoma of the thyroid and para-thyroid carcinoma. Postoperative course was uneventful, and no other metastasis was found.

Metastatic renal cell carcinoma in the thyroid is uncommon, but any patient with a tumor of the thyroid, who has a hisory of renal cell car-cinoma, should be thought to have a possibility of metastatic tumor.