摘要
目的:探讨腹外韧带样型纤维瘤病的MRI和CT表现。方法:回顾性分析82例经手术病理证实的腹外韧带样型纤维瘤病患者的影像资料。所有病例行MRI平扫,58例行增强扫描;37例行CT平扫,其中26例行增强扫描。结果:82例中单发病灶62例(76%),多发病灶20例(24%)。原发性病灶35例(43%),复发性病灶47例(57%)。75例(91.5%)病灶边界不清或部分不清,48例病灶(58.5%)包绕神经血管束,16例病灶侵蚀骨质,5例病灶压迫邻近骨质。所有病灶在T1WI上呈等信号或稍高信号,在T2WI上呈高信号,增强后呈中度或高度强化;75例(91.4%)病灶信号不均匀,其内部均可见条索状、条片状区,在T1WI和T2WI上呈低信号,增强扫描无明显强化;部分病灶周边可有水肿区。CT平扫示病灶呈等或稍低密度,增强后呈中度或高度不均匀强化。结论:腹外韧带样型纤维瘤病的影像学表现具有一定特征性,是该病变与软组织恶性肿瘤的重要鉴别要点。
Objective：To study the MRI and CT characteristics of the extra-abdominal desmoid-type fibromatosis（DF）.Methods：The CT and MRI data of 82 patients with extra-abdominal DF proved by pathology were analyzed retrospectively.Plain MRI scan was performed in all patients,and post-contrast enhanced MRI in 58 cases,plain CT scan in 37 cases and post-contrast enhanced CT in 26 cases.Results：Among the 82 cases,there were 62cases（76%）with single lesion,20cases（24%）with multiple lesions;and there were primary lesions in 35cases（43%）,and recurrent lesions in 47cases（57%）.75lesions（91.5%）had an ill-defined or partially ill-defined margin,48（58.5%）lesions had neurovascular bundle involvement,16 lesions had bone erosion and 5cases showed compression of the adjacent bone.MRI showed that the lesions were iso-or slightly hyper-intense on T1 WI,hyperintense on T2 WI,and moderately to markedly enhanced after Gd-DTPA administration,75（91.4%）lesions were heterogeneous with linear or curvilinear areas demonstrating low signal on both T1 WI and T2 WI and no enhancement.The lesions showed slight hypodenstiy on plain CT,and inhomogeneous enhancement on post-contrast CT.Conclusion：The characteristic imaging manifestations of extra-abdominal desmoid-type fibromatosis can provide important evidence to discriminate these lesion from malignant soft tissue tumors.
出处
《放射学实践》
北大核心
2017年第9期971-973,共3页
Radiologic Practice
关键词
软组织肿瘤
腹外韧带样型纤维瘤
体层摄影术
X线计算机
磁共振成像
Soft tissue tumor
Extra-abdominal desmoid-type fibromatosis
Tomograhpy
X-ray computed
Magnetic resonance imaging
