乳腺纤维瘤病是由一种中间型的纤维源性肿瘤,临床及影像学上与乳腺癌极易混淆。本文报告1例乳腺纤维瘤病,对其临床、病理及免疫组化结果进行分析,并对该病的文献进行复习。1病历摘要女,28岁。发现左乳肿物4 a,近6个月明显增大。查体:于左侧乳房1点钟距乳头约4 cm处扪及3 cm×2 Breast fibromatosis is an intermediate fibrogenesis tumor that can be easily confused with breast cancer clinically and radiologically. This article reports a case of breast fibromatosis, its clinical, pathological and immunohistochemical results were analyzed, and the literature of the disease review. 1 medical record summary female, 28 years old. Left breast tumor was found 4 a, significantly increased in the past 6 months. Physical examination: at 1 o’clock on the left breast from the nipple palpable about 4 cm 3 cm × 2