单囊型成釉细胞瘤临床病理及螺旋CT征象分析

Clinicopatholog and multi-slice spiral CT imaging features of unicystic ameloblastoma

目的探讨单囊型成釉细胞瘤的临床病理及螺旋CT征象。方法回顾性分析经病理证实的11例单囊型成釉细胞瘤的临床病理和螺旋CT征象。结果 11例中,下颌骨7例,其中下颌角及升支5例,上颌骨4例,1例多发。螺旋CT平扫与肌肉比呈均匀低密度,Ⅰ型及Ⅱ型(9例)表现为圆形或椭圆形,部分边缘硬化可见分叶,边界清晰;Ⅲ型表现为较大囊状低密度,边缘区见多发小子囊影。病变以向唇颊侧膨胀为主,部分病例(3例)穿破骨皮质,牙根(5例)可见吸收。结论单囊型成釉细胞瘤的临床病理和螺旋CT表现具有一定特征性,螺旋CT检查对单囊型成釉细胞瘤的诊断、鉴别诊断及分型有重要价值;单囊型成釉细胞瘤影像表现与病理分型之间具有一定相关性,有利于临床治疗方案的选择。

Objective To explore the clinical pathological and multi-slice spiral CT imaging features of unicystic ameloblastoma （UA）. Methods The clinical pathological and multi-slice spiral CT imaging features of 11 eases with UA verified by pathology were reviewed. Results Among the 11 cases, the most common sites were in the region of mandibula. CT images of the 11 UAs showed ho- mogenous and low density in comparison with muscles. Among the 11 cases ,9 were round or oval and appeard as lobulate lesions. The lesions could destroy adjacent cortex, the bone expansion changes were mostly with lip or chap, all of them showed well-defined mar- gins. 3 showed cortical perforation;5 had root resorption of the neighboring teeth. All UAs showed well-circumscribed margins without soft tissue masses. Conclusion Unicystic ameloblastoma has some own unique features,the application of multi-slice spiral CT could improve the diagnostic accuracy of unicystic ameloblastoma.