颅骨少见良性病变的影像诊断分析  

Imaging diagnosis of rare benign skull lesions

作　　者：李丽[1] 王玉锦[1] 朱文珍[1] 夏黎明[1] 

机构地区：[1]华中科技大学同济医学院附属同济医院放射学教研室,武汉430030

出　　处：《放射学实践》2015年第12期1217-1220,共4页Radiologic Practice

摘　　要：目的:探讨CT及MRI对颅骨良性病变的诊断价值。方法:回顾性分析13例以骨质破坏为主的颅骨良性病变的CT及MRI表现,并与其病理表现进行对照分析。结果:13例中骨纤维结构不良6例,主要CT表现为局限性小病灶(5例)多呈磨玻璃密度,弥漫性病灶(1例)可见磨玻璃密度及丝瓜络样改变;主要MRI表现为病灶在T1WI及T2WI上均以低信号为主;骨化性纤维瘤3例,主要CT表现为肿瘤呈膨胀性生长,骨皮质破坏不明显,无骨膜反应;巨细胞修复性肉芽肿2例,主要CT表现为病灶内可见多发骨性分隔,MRI上可见病灶呈多房样改变;胆固醇性肉芽肿1例,在T1WI、T2WI及压脂图像上病灶均呈高信号,有一定特征性;动脉瘤样骨囊肿1例,其特征性影像表现为病灶内可见液-液平面。结论:部分颅骨良性病变具有特征性的影像学表现,CT及MRI检查有助于这类病变的诊断及鉴别诊断。Objective：To assess the value of CT and MRI in the diagnosis of benign lesions of the skull. Methods：CT and MRI data of 13 cases with bone destruction caused by benign skull lesions were retrospectively analyzed and correlated with the pathological features. Results：Of 13 cases, 6 cases were diagnosed as fibrous dysplasia,the main CT manifestations were that five cases of the small focal lesions showed ground-glass density while the diffuse lesions （1 case） showed ground- glass density and loofah-like changes;three cases were ossifying fibroma, the main CT manifestations were expansive growth without periosteal reaction and cortical destruction;two cases were giant cell reparative granuloma,the main CT manifesta- tions were multiple osseous septations inside the lesions, and on MR images the lesions showed multilocular changes;one case was cholesterol granuloma, the lesion showed high signal intensity on T1 WI, T2 WI and T2-STIR images, which was the characteristic feature;one case was aneurysmal bone cyst,its most characteristic imaging finding was liquid-liquid level in- side the lesion. Conclusion.. Some of the benign lesions of skull have characteristic manifestations,CT and MRI are very use- ful for the diagnosis and differential diagnosis of these diseases.

关 键 词：磁共振成像 体层摄影术 x线计算机 颅骨病变 骨纤维结构不良 骨化性纤维瘤 巨细胞修复性肉芽 肿 动脉瘤样骨囊肿 胆固醇性肉芽肿 

分 类 号：R739.41[医药卫生—肿瘤] R730.44[医药卫生—临床医学]