乳腺错构瘤是一种少见的乳腺瘤样病变,并非真性肿瘤,临床上主要表现为无痛性乳房肿块,极易误诊。本文报告我院1980年1月～1995年1月15年间收治的经手术病理证实的乳腺错构瘤9例。术前临床确切诊断率为0,组织学误诊率为22.2％,本文对该病的病因、临床表现、组织学成分、特征与分型、诊断与鉴别诊断及治疗进行了探讨,认为组织学检查是该病确切诊断的唯一可靠依据。 Breast hamartoma is a rare breast tumor-like lesion, not a true one. Clinically, it is mainly characterized by a painless breast mass and is easily misdiagnosed. This article reports nine cases of breast hamartoma confirmed by surgery and pathology in our hospital from January 1980 to January 1995. The preoperative clinical diagnostic rate was 0, and histological misdiagnosis rate was 22.2%. The etiology, clinical manifestations, histological components, characteristics and classification, diagnosis and differential diagnosis and treatment of the disease were discussed in this paper. The histological examination was considered. It is the only reliable basis for the exact diagnosis of the disease.