颅内软骨瘤的CT、MRI表现  

CT and MRI features of intracranial chondroma

作　　者：肖格林[1] 陈娟芝[2,3] 韩路军[4] 

机构地区：[1]广州中医药大学附属中山医院影像中心,广东528400 [2]南方医科大学基础医学院病理系,广州510515 [3]南方医科大学附属南方医院病理科,广州510515 [4]中山大学附属肿瘤医院影像与微创介入中心,广州510060

出　　处：《影像诊断与介入放射学》2013年第1期8-11,共4页Diagnostic Imaging & Interventional Radiology

基　　金：广东省自然科学基金资助项目(S2011040003730);国家自然科学基金资助项目(81201960)

摘　　要：目的分析总结颅内软骨瘤的CT、MRI特点,并与临床病理相对照。方法回顾性分析7例经手术病理证实的颅内软骨瘤的影像学资料、临床资料及病理资料。结果颅底发病5例,左侧顶叶大脑镰旁发病1例,右侧顶枕骨区发病1例;CT上病灶内见多发不规则钙化或残留骨质,呈混杂密度,可见多发低密度区域,边界清楚;MRI上均呈混杂信号,可见更长T_1、短T_2信号,肿瘤软骨基质及黏液成分呈长T_1、长T_2信号,5例内部可见片状短T_1信号;MR增强扫描后7例均可见明显不均匀花边样强化,肿瘤实质部分常规增强未见强化。结论软骨瘤是颅内少见肿瘤,好发于前颅窝底,CT上有多发钙化或残留骨,MR增强扫描呈明显不均匀花环样强化,CT、MR对其诊断及鉴别诊断具有重要临床价值。Objective To investigate the CT and MRI features of intracranial chondroma. Methods The CT and MRI as well as clinical information of 7 patients with histologically confirmed intracranial chondromas were reviewed. Results The tumors were located in the skull base （5）, left parietal lobe parafalcian region （1）, and right parietal-occipital region （1）. CT showed multiple irregular calcifications or residual bone in the tumors with mixed densities, multiple cystic areas and well-defined boundary. MRI also showed heterogeneous signal intensities with Tt and T2 hypointense calcifications as well as Tt hypointense and Tz hyperintense cartilaginous and cystic components. In 5 patients, the tumors were hyperintense on Tl-weighted images. Lace pattern of contrast enhancement and non-enhancing cystic components were noted in 7 patients. Conclusions Intracranial chondroma is a rare intracranial tumor with predilection in the anterior cranial fossa, muhiple calcifications or residual bone, irregular lace-like enhancement on CT and MRI.

关 键 词：软骨瘤 磁共振成像 病理学 

分 类 号：R739.4[医药卫生—肿瘤]