颅内硬膜外软组织巨细胞瘤1例并文献复习

目的探讨软组织巨细胞瘤(GCT-ST)的影像特点及鉴别诊断。方法回顾性分析1例经手术病理证实的颅内硬膜外GCT-ST的平扫CT、平扫和增强MRI表现并行文献复习。结果颅底CT平扫显示左侧颞部多囊性低密度影,呈分叶状,内部见高密度分隔,邻近左侧颞骨局部骨质变薄、毛糙。MRI显示左侧颞部囊性肿物,T1WI呈低信号,T2WI呈高信号,T2 FLAIR呈等信号,其内见低信号分隔;增强检查可见病变边缘及分隔强化。结论颅内硬膜外GCT-ST罕见,其临床和影像表现无特异性,确诊需病理组织学检查。

Intracranial epidural giant cell tumor of soft tissue:a case report and literature review

Objective To investigate the image features and differential diagnosis of giant cell tumor of soft tissue(GCT-ST).Methods The imaging data including CT and plain and enhanced MRI of a case with pathologically confirmed GCT-ST originated from the intracranial epidural soft tissue was retrospectively analyzed and the literatures were reviewed.Results CT showed a polycystic hypodense mass with intra-hyperdense septa in the left temporal area.The left squamous part of temporal bone that was adjacent to the lesion was thinned and rough.MRI showed a polycystic mass in the left temporal area with hypointensity on T1WI,hyperintensity on T2WI,and isointensity on T2-FLAIR.The septa showed hypointensity on T2-FLAIR.The septa and lesion capsule were enhanced after administration of contrast medium.Conclusions Intracranial epidural GCT-ST is rare,clinical and imaging findings are non-specific.The diagnosis requires histopathological examination.