颅内皮样囊肿的影像诊断(附10例报告)

目的：颅内皮样囊肿是罕见肿瘤。作者报告１０例经手术病理证实颅内皮样囊肿。并对其影像表现，病因，病理和临床特征进行分析。方法：９例因突发性头痛，呕吐收入院。６例ＭＲＩ、３例ＣＴ、１例ＣＴ和ＭＲＩ检查。结果：鞍旁４例，鞍上３例，三室后，前颅窝底和后颅窝各１例。１０例ＭＲＩ表现为脂肪信号，ＣＴ表现为脂肪密度影。其中９例ＣＴ和ＭＲＩ在蛛网膜下腔脑沟内和双侧脑室内散布有脂肪滴。结论：颅内皮样囊肿破裂后有影像学和临床特征性表现。ＭＲＩ优于ＣＴ诊断。

Radiodiagnosis of Intracranial Dermoid Cyst

Purpose:Intracranial dermoids are rare of congenital origing tumors.This author reported ten cases of intracranial dermoids with operating identification.10 cases of intracranial dermoids were studied with radiography and pathogenesis,and correlated with pathological and clinical feature.Methods:9 cases presented with acute onset of general headache and vomiting necessitating hospital admission.6 cases had MRI examination.3 cases had CT scan.1 case had CT and MRI examination.Results:Parasellar region 4 cases,suprasellar 3 cases,posterior third ventricle 1 case,posterior fossa 1 case,frontobasal 1 case.10 cases of MR image showed fatty mass signal and CT scan showed fatty dense.Diffusing fatty signals within subarachnoid space and bilateral ventricla could be seen on CT and MR images of 9 cases.Conclusion:The ruptured intracranial dermoid cyst were with specific clinical and neuroradiological manifestation.MRI is superior than CT in diagnosing dermoid cysts.