骨纤维异常增殖症是以骨纤维变性为特征的骨骼系统非真性肿瘤，可分为单骨型、多骨型及Albright综合征三种类型，文献中屡有报道，但单发于一侧鼻骨者却罕见。我院曾收治1例，报告如下。患者，女，12岁。因左侧易背部渐进性隆起2年，于1995年8月22日入院。体检；一般情况可，左 Bone fibrous dysplasia is a skeletal non-true tumor characterized by bone fibrosis. It can be divided into three types: unilateral type, polyhedral type and Albright syndrome. It has been frequently reported in the literature, however, It is rare. I have admitted to hospital in 1 case, the report is as follows. Patient, female, 12 years old. Due to the left easy to back gradual swelling 2 years, in August 22, 1995 admission. Physical examination; general situation may, left