末梢肺に発生した孤立性扁平上皮腺上皮性混合型乳頭腫の1例

Solitary Mixed Squamous and Glandular Papilloma of the Peripheral Lung：Report of a Case

はじめに　孤立性乳頭腫は肺腫瘍の中では比較的まれな良性腫瘍であり，中枢発生が多く，末梢発生はまれとされている．われわれは，末梢発生の扁平上皮腺上皮性混合型乳頭腫の手術例を経験したので，若干の文献的考察を加えて報告する．

A 76-year-old woman was admitted because of a 25 mm solitary nodule in right S10 on chest computed tomography （CT）. 18 fluoro deoxyglucose-positron emission tomography （FDG-PET） indicated accumulation with standardized uptake value （SUV） max 5.2. The serum carcinoembryonic antigen （CEA） and squamous cell carcinoma antigen （SCC） level was elevated. Although the diagnosis was not established by bronchofiberscopy, lung cancer was suspected and the video assisted thoracoscopic surgery （VATS） was carried out. Since no malignant cells were detected by intra-operative pathology, partial resection of the right lower lobe was performed. The postoperative pathological examination revealed features of mixed squamous and glandular papilloma.