학술논문
体部表皮样囊肿的 CT 和 MRI 表现 / CT and MRI findings of the epidermoid cyst in body
Document Type
Academic Journal
Author
Source
实用放射学杂志 / Journal of Practical Radiology. (11):1861-1864
Subject
Language
Chinese
ISSN
1002-1671
Abstract
目的：探讨体部表皮样囊肿的 CT 和 MRI 影像特征。方法回顾性分析经手术病理证实的78例患者共81个病灶的临床、影像及病理资料,其中75例行 CT 扫描,17例行 MRI 检查。结果75例单发,3例多发。病灶主要发生于头面部(26/78)和躯干部(37/78),其次为四肢(14/78),盆部(3/78)和腹膜后(1/78)者较少。53例56个病灶(69.1%)CT 图像表现为类圆形或椭圆形囊性低密度肿块,囊壁菲薄,无强化,MRI 图像上 T1 WI 呈低信号或等低信号、T2 WI 呈高信号影,DWI 呈高信号。25例(30.9%) CT 表现不典型,其中囊壁增厚并强化者15例,呈片状软组织密度影者5例,呈高密度结节者3例,呈完全钙化者2例。结论典型体部表皮样囊肿影像表现具有明显特征性,CT 及 MRI 能够反映病灶炎症、感染、钙化等病理变化,有助于加深对体部表皮样囊肿少见征象的认识。
Objective To explore CT and MRI features of the epidermoid cyst in body.Methods 81 lesions in 78 patients con-firmed by surgical pathology were analyzed retrospectively including clinical,radiological and pathological data.75 patients under-went CT scan and 1 7 ones underwent MRI.Results Single lesion was found in 75 patients,and multiple ones were found in 3.Most lesions were found on the head and face (26/78)and trunk (37/78),and others were on the extremities (14/78),pelvic (3/78)and retroperitoneum (1/78).56 lesions in 53 patients (69.1%)showed round or oval cystic mass with low density,thin wall and no en-hancement on CT images.On MRI images,these lesions appeared hypointensity or isointensity on T1 WI,hyperintensity on T2 WI and DWI.In 25 patients (30.9%)with atypical CT appearances,1 5 appeared as thick wall and rim enhancement,5 mimicked soft tissue,3 showed nodules with hyperdensity,and 2 were completely calcified.Conclusion Typical epidermoid cyst in body has obvi-ously characteristic imaging features.CT and MRI can reflect the inflammation,infection,calcification and other pathological chan-ges of the lesions.
Objective To explore CT and MRI features of the epidermoid cyst in body.Methods 81 lesions in 78 patients con-firmed by surgical pathology were analyzed retrospectively including clinical,radiological and pathological data.75 patients under-went CT scan and 1 7 ones underwent MRI.Results Single lesion was found in 75 patients,and multiple ones were found in 3.Most lesions were found on the head and face (26/78)and trunk (37/78),and others were on the extremities (14/78),pelvic (3/78)and retroperitoneum (1/78).56 lesions in 53 patients (69.1%)showed round or oval cystic mass with low density,thin wall and no en-hancement on CT images.On MRI images,these lesions appeared hypointensity or isointensity on T1 WI,hyperintensity on T2 WI and DWI.In 25 patients (30.9%)with atypical CT appearances,1 5 appeared as thick wall and rim enhancement,5 mimicked soft tissue,3 showed nodules with hyperdensity,and 2 were completely calcified.Conclusion Typical epidermoid cyst in body has obvi-ously characteristic imaging features.CT and MRI can reflect the inflammation,infection,calcification and other pathological chan-ges of the lesions.