鞍区胺脑膜瘤 及相关疾病MRI误诊分析

目的 借鉴误诊病例的经验教训,提高对鞍区脑膜瘤及相关疾病的诊断水平。方法 回顾性分析5例经手术病理证实MRI语诊的鞍区脑膜瘤及相关疾病的MRI表现。结果 5例中,鞍结节脑膜瘤=鞍隔脑膜瘤各2例,均误为垂体瘤,1例鞍上室管膜瘤误入团脑膜瘤,其误诊原因为：（1）定位不准确（鞍区、鞍上）;（2）忽视对有诊断价值MRI征象的认识;（3）病变部位少见;（4）MRI对骨质增生、钙化不能识别;（5）对临床资料缺乏重视和客观分析。结论 复习有关文献,加深对该病的认识,客观、全面、细致地观察分析肿瘤的各种征象,有助于正确的定位、定性诊断,必要时联合CT应用,可避免误诊。

Analysis of Misdiagnosisby MRI in Meningionma of Sellar Region and Related Diseases

Objective　To study the causes of misdiagnosis by MRI in meningionma of sellar region and related diseases ib order to improve diagnostic level of image.Methods　5 cases of misdiagnosed meningionma of sellar region and related disease proved by surgery and pathology were analyzed retrospectively.Results　Amony the 5 cases,2 cases with tubercle sellar meninogioma and 2 cases with diaphragma sellar meningionma misdiagnosed as pituitary adenomas,1 case with ependymoma misdiagnosed as meningioma.The main causes of misdiagnoses were:①Improper location orientation(suprasellae or endosellae);②The ignored MRI findings with diagnostic value;③Rare locations;④The limits of MRI;⑤The neglect and lack analysis of clinical data.Conclusions　To review the literature and improve the understanding of the tumor and analyse.MRI findings of tumor in necessary completely can be used for localization and determine the natereaccurately.CT combined application with MRI.The erroneous result can be avoided.