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手术所见左下肺软组织肿块,包膜完整,大小约4.0cm×4.0cm×3.0cm,切面实性,红色,质软。病理检查肿瘤细胞呈圆形或多边形,弥漫分布;细胞核居中,大而深染;胞浆丰富,伊红淡染、呈透明状;核分裂像少见。间质中可见扩张充血或裂隙状的薄壁血管(图4)。免疫组织化学示:HMB45核(+),Mela
Surgical findings of the left lower pulmonary soft tissue mass, complete capsule, the size of about 4.0cm × 4.0cm × 3.0cm, section solid, red, soft. Pathological examination of tumor cells were round or polygonal, diffuse distribution; central nucleus, large and deep staining; rich cytoplasm, Yihong pale, transparent; mitotic rare. Interstitial infiltration can be seen expansion or fissure thin-walled vessels (Figure 4). Immunohistochemistry showed: HMB45 nuclear (+), Mela