本文首次报道了1例乳腺的罕见肿瘤,在作了系统的巨检、镜检、组织化学观察及复习文献的基础上,提出了乳腺的腺血管脂肪瘤一说。此瘤发生于1岁女婴,有薄层纤维包膜,由腺体、血管及脂肪组织三种成分构成。本瘤性质与错构瘤相符,同时具备肿瘤与畸形的双重特性。 This article first reported a rare case of mammary gland tumors. On the basis of a systematic review of macroscopy, microscopy, and histochemical observation and review of the literature, a report was made on the presence of adenoma of the breast. This tumor occurred in a 1-year-old girl with a thin layer of fiber capsules consisting of three components: glands, blood vessels, and adipose tissue. The nature of the tumor is consistent with the hamartoma, but also has the dual characteristics of tumor and deformity.