顎下腺転移を来した腎細胞癌

RENAL CELL CARCINOMA WITH METASTASIS TO THE SUBMANDIBULAR GLAND: A CASE REPORT

　症例は46歳，男性。左腎細胞癌で腎摘後2年10か月目に，右下顎部に2cm大の無痛性腫瘤が出現。右顎下腺を摘出したところ，腫瘍細胞はPAS陽性顆粒を有する淡明細胞からなり，臨床病理学的に腎癌の顎下腺転移と考えられた。腎癌の顎下腺転移症例の報告は少なく，調べ得た限りでは本報告は文献上6例目にあたる。

A 46-year-old man presented with a metastatic lesion on the submandibular gland from renal cell carcinoma 2 years and 10 months after a left-side total nephrectomy. Submandibular adenectomy was performed and, path-ologically, metastatic tumor proved to be a clear cell with a periodic acid-Schiff stain positive granular on a cyto-plasm. Only five cases of metastatic spread to the sub-mandibular gland from a renal cell carcinoma are record-ed in the literature.