患者女,40岁,发现右乳外上象限肿物半年余,查肿物位置较浅,推之可移动,无痛。临床拟诊为乳腺纤维腺瘤,在局麻下行肿物摘除术。术中见肿物与周围界线清楚,无粘连易分离。巨检:肿物呈结节状,大小约2.0cm×1.5cm×1.5cm,表面光滑,有假包膜。切面:灰红色,均质有光泽,无明显出血、坏死及囊性变,质偏脆。镜下:可见瘤组织内有较多扩张的大小不一的血管,管腔内被覆扁平内皮细胞,在血管周 Female, 40 years old, found that the right upper quadrant of the upper quadrant more than six months, check the location of the tumor shallow, pushing the mobile, painless. Clinical diagnosis of breast fibroadenoma, tumor removal under local anesthesia. Intraoperative see the tumor and the surrounding boundaries clear, no adhesions easily separated. Giant seized: tumor was nodular, size of about 2.0cm × 1.5cm × 1.5cm, the surface is smooth, a pseudocapsule. Section: gray-red, homogeneous shiny, no significant bleeding, necrosis and cystic degeneration, the quality of crisp. Microscope: visible within the tumor tissue more dilated vessels of varying sizes, flattened endothelial cells within the lumen, in the vascular week