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乳腺腺纤维瘤是属于纤维上皮性瘤的一种。乳腺腺纤维瘤内主要以纤维组织增多,而腺管增生不显著为特征。该瘤大多是单发性,亦有多发性。肿块境界清楚有包膜,触摸活动性大,质地中等硬度。按病理组织学可分为:管周型腺纤维瘤、管内型腺纤维瘤、囊内腺纤维瘤、巨型腺纤维瘤、多形性腺纤维瘤等五种。乳腺腺纤维瘤人较多见,家畜以乳牛为多,大白鼠乳腺腺纤维瘤的瘤内具有明显小叶结构,以此与人类有异。在此介绍一例。某医学院实验动物饲养室,于1987年1月,送检大白鼠一只,雌性,年龄6个月,体重356克(含肿瘤)。第一胎产仔6只,
Mammary adenoma is a type of fibrous epithelial tumor. In breast adenoma, fibrous tissue is mainly increased, but the glandular ductal hyperplasia is not significant. Most of the tumors are solitary and multiple. The mass is clearly enveloped and the touch activity is high and the texture is medium hardness. According to pathological histology can be divided into: Peri-implant adenoma, intraluminal adenoma, intracapsular adenofibroma, giant adenofibroma, pleomorphic adenoma and other five. The majority of breast adenomas are found in humans. Dairy cows are the majority of livestock. The acinar fibroids of rats have distinct lobular structures within the tumor, which is different from humans. Here is an example. A medical school animal husbandry room, in January 1987, sent a rat, female, age 6 months, weighing 356 grams (including tumors). 6 first-born babies