眼眶骨纤维异常增生症的CT诊断

目的研究眼眶骨纤维异常增生症的CT影像特点。设计回顾性病例系列。研究对象3l例眼眶骨纤维异常增生症患者。方法分析眼眶骨纤维异常增生症患者的影像检查资料。主要指标眼眶CT影像。结果主要CT表现为：（1）病变部位以蝶、额骨常见，蝶骨23例，额骨13例；（2）没有固定形态，病变的骨组织广泛膨胀、增厚；（3）边界模糊，有时呈花边样改变；（4）病变不是局限在骨骼的某一部位，而是扩展到这块骨骼的整体组织；（5）密度大多均匀如象牙样，部分似蜂窝样；（6）多骨受累时，引起眼眶及周围结构的继发性改变，出现严重的并发症。结论CT检查是临床诊断眼眶骨纤维异常增生症的重要依据。

CT diagnosis for the orbital fibrous dysplasia

Objective To study the CT features of fibrous dysplasia in the orbit. Design Retrospective case series. Participants 31 cases with fibrous dysplasia in the orbit. Methods CT manifestations of 31 cases of fibrous dysplasia in the orbit were analyzed. Main Outcome Measures CT features of orbits. Results The main CT findings were as following: (1) The common sites were the sphenoid and frontal bones; (2) There were no regular outline in the involved bones. They were showed thick and expansion; (3) The margins were vague as lace at some occasions; (4) It was usually sclerotic and expanded the bone throughout its length rather than in a localized fashion; (5) The density was almost uniform as ivory, some like honeycomb; (6) The lesions changed the structure of orbit when polyostotic bones were involved, a series of serious syndrome seconded to those changes. Conclusion CT examination plays an important role in diagnosis and differential diagnosis of fibrous dysplasia in the orbit.