前頭洞転移にて発見された腎細胞癌の1例

Abstract

症例は58歳男で, 前頭部腫大を主訴に当院耳鼻科を受診した.CT, MRI, 右内外頸動脈動脈造影で前頭洞腫瘍と診断され, 前頭洞腫瘍摘出術を施行された.病理学的にclear cell carcinomaと診断され, 原発巣の診断のための腹部CTで右腎腫瘍を指摘され, 当科に紹介入院となった.右腎細胞癌, 術前stage T2, N0, M1の診断のもとに, 右腎摘除術を行った.病理組織学所見は, renal cell carcinoma, alveolar type, clear cell sub type, G2, 1NFα, pT2≦, pM1, pV0と診断した

A 58-year-old man was admitted with a swelling in the frontal region. Computerized tomography scan, magnetic resonance imaging and angiography revealed a tumor in the right frontal sinus. The surgically extirpated specimen showed clear cell carcinoma which was suspected to be a metastasis from renal cell carcinoma. Subsequent urologic examination disclosed the right renal tumor. Since there were no other systemic metastases, right nephrectomy was performed. Pathologically, the renal tumor was clear cell subtype renal cell carcinoma and had the same histology as the frontal sinus tumor.