颅骨表皮样囊肿的CT诊断  

CT diagnosis of skull epidermoid cyst

作　　者：葛体池[1] 许崇永[2] 王志强 赵雅萍[2] 贺辉[2] 

机构地区：[1]温州医学院附属第三医院急诊科,浙江瑞安325200 [2]温州医学院附属第二医院放射科,浙江温州325027 [3]温州市中西医结合医院放射科,浙江温州325000

出　　处：《中国临床医学影像杂志》2005年第7期367-368,共2页Journal of China Clinic Medical Imaging

摘　　要：目的:探讨颅骨表皮样囊肿(SEC)的CT表现特点,提高对本病的认识。方法:搜集经手术或穿刺活检病理证实的SEC7例,额骨2例,顶骨3例,枕骨2例,均行CT平扫,分析其CT表现特征。结果:5例SEC以向颅外膨胀生长为主,病灶最大约66mm×53mm,其中3例呈混杂密度,杂有斑片状脂肪影;2例呈囊性密度,密度均匀;病灶累及颅板三层,2例骨质缺损呈火山口状,边缘增生硬化。2例病灶局限于板障内,膨胀生长,边缘清晰锐利,内外板受压变薄。结论:囊性膨胀生长及火山口样骨质缺损对SEC诊断具有重要意义,但诊断困难时仍需组织学检查。Objective: To investigate the CT characteristics of skull epidermoid cyst(SEC) and improve the recognition of the disease. Methods: Seven patients of SEC proved by operation and biopsy were collected in the study. There were 2 cases in frontal bone, 3 in parietal bone and 2 in occipital bone. All patients had undergone CT plain scanning, the CT appearances were analyzed retrospectively. Results: Five cases grew extra-cranial with bone expansion. The maximum foci was 66mm×53mm. Three cases exhibited mixed density with patchy fat density in 2 cases, cystic homogenous density in 2 cases, the foci involved three-layers of the skull, 2 cases manifested crater-form deossification with sclerotic border. The other 2 cases localized in diploe with cystic expansive growth and sharp margin, the exterior and interior plate of the skull were compressed and thinned. Conclusion: Cystic expansive growth and crater-form deossification have important value in diagnosis of SEC, but it still needs histologic examination in difficult cases.

关 键 词：表皮囊肿 颅骨肿瘤 体层摄影术 X线计算机 

分 类 号：R739.41[医药卫生—肿瘤] R814.42[医药卫生—临床医学]