侧颅底巨细胞修复性肉芽肿的影像学研究  

Imaging diagnosis of giant cell reparative granuloma in lateral skull base

作　　者：齐草源 王潇 姜虹[1] 杨本涛[1] QI Caoyuan;WANG Xiao;JIANG Hong;YANG Bentao(Department of Radiology,Beijing Tongren Hospital,Capital Medical University,Beijing,100730,China)

机构地区：[1]首都医科大学附属北京同仁医院放射科,北京100730

出　　处：《中国耳鼻咽喉头颈外科》2021年第10期629-631,共3页Chinese Archives of Otolaryngology-Head and Neck Surgery

摘　　要：目的分析发生于侧颅底的巨细胞修复性肉芽肿(giant cell reparative granuloma,GCRG)的影像学表现,以提高对该病的认识及诊断准确率。方法回顾分析经病理确诊为侧颅底GCRG的9例患者CT和MRI资料,提取侧颅底GCRG的影像学特征。结果9例患者均为单侧病变,以侧颅底颞骨鳞部为中心生长;CT表现为软组织密度,4例病变内及边缘可见点条状高密度钙化、骨化或残存骨,9例显示膨胀性骨质破坏,8例并可见骨质增生硬化;MRI表现为T2WI低信号为主的混杂信号,其内可见高信号的囊变坏死区,T1WI呈等、低信号,增强后不均匀轻中度强化。结论侧颅底GCRG有特征性影像学征象,术前能够提示诊断。OBJECTIVE To study the imaging characteristics of giant cell reparative granuloma(GCRG)in lateral skull base.METHODS The CT and MRI data of 9 histologically confirmed GCRG in lateral skull base were retrospectively studied in order to get the typical imaging features of GCRG.RESULTS Nine cases of GCRG were unilateral lesion,and the lesions were originated from the temporal squama of the lateral skull base.Nine GCRGs appeared as soft tissue attenuation,and images with strip and punctate calcification or residual bone in 4 patients.The lesions showed expansive bony destruction with osteosclerosis of the adjacent bone on CT.T1 isointensity or hypointensity and heterogeneous T2 hypointensity with cystic degeneration and necrosis were presented on MRI and it had heterogeneous and mild-moderate enhancement after injection of contrast agent.CONCLUSION The characteristic imaging features can suggest the diagnosis of GCRG of the lateral skull base preoperatively.

关 键 词：肉芽肿 巨细胞 颅底 体层摄影术 X线计算机 磁共振成像 

分 类 号：R762[医药卫生—耳鼻咽喉科]