폐에 발생한 양성 조직구종 : 1예 보고
Benign Histiocytoma of the Lung : A Case Report
정명자, 손현진, 김민호,
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정명자 ( Chung Myoung-Ja )
전북대학교 의과대학 병리학교실
손현진 ( Son Hyun-Jin )
전북대학교 의과대학 병리학교실
김민호 ( Kim Min-Ho )
전북대학교 의과대학 흉부외과학교실
KMID : 0357920050390050351
Abstract
Histiocytomas have rarely been reported in the lungs. We report an unusual benign pulmonary histiocytoma in a 45-year-old man and discuss the differential diagnosis. Chest CT showed a well-defined solitary pulmonary nodule of approximately 3 cm in size in the posterobasal segment of the right lower lobe. Posterolateral thoracotomy and wedge resection was performed. Gross examination revealed a mass, measuring 2.2×2.1 cm that had a circumscribed margin within the lung parenchyma. Microscopically, the tumor was entirely composed of large polygonal to round cells with a few chronic inflammatory cells. These tumor cells contained abundant cytoplasm which was either granular, eosinophilic or foamy. Immunohistochemically, these cells were diffusely positive for CD68 and focally positive for 1-antitrypsin, but negative for cytokeratin, vimentin, and smooth muscle actin.
키워드
Histiocytoma;Lung
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