盆腔孤立性纤维瘤的CT、MRI表现  

CT and MRI Findings of Solitary Fibrous Tumors in the Pelvis

作　　者：王福转[1] 钟锐[2] 

机构地区：[1]河南省郑州市第二人民医院放射科,450006 [2]中山大学附属肿瘤医院影像介入中心

出　　处：《临床放射学杂志》2013年第9期1362-1365,共4页Journal of Clinical Radiology

摘　　要：目的分析盆腔孤立性纤维瘤的CT、MRI特点并与病理结果进行对照,以提高对此疾病的认识及诊断水平。方法回顾性分析6例经手术病理证实的盆腔孤立性纤维瘤的CT、MRI资料,观察病灶的形态、密度/信号特征并与病理形态学表现进行对照。结果 6例中4例行CT检查,2例行MRI检查,全部病灶均边界清,呈圆形或椭圆形。CT平扫3例病灶呈稍低密度,内可见片状、灶状更低密度区;1例呈均匀等密度。4例病灶内均未见钙化。2例行常规增强扫描者,病灶呈明显不均匀"地图"样强化。2例行动态增强扫描者,1例动脉期轻度、均匀强化,门静脉期及延迟期未见持续性、延迟强化或排出征象;1例动脉期呈轻度不均匀强化,门静脉期及延迟期呈持续性强化及延迟性强化,并且在门静脉期显示排出征象。MR平扫T1WI上,1例病灶呈不均匀稍低信号;另1例呈均匀等信号。T2WI上,1例呈等、低、高混杂信号;另1例以高信号为主。增强扫描1例呈明显不均匀"地图"样强化,1例呈明显均匀强化。结论盆腔孤立性纤维瘤影像学表现多样,缺乏特异性征象,确诊仍需病理学及免疫组织化学检查。Objective To analyze the computed tomography （CT） and magnetic resonance imaging （MRI） findings of pelvic solitary fibrous tumors （SFFs） and to improve its diagnostic accuracy. Methods Image data of 6 cases with pelvic SFTs confirmed by histopathology were analyzed retrospectively. Image characteristics such as shape, attenuation or intensity for each lesion were analyzed and compared with the pathological results. Results 4 cases were examined by CT, 2 cases were examined by MRI, all the 6 cases showed oval or rounded and well defined masses. Plain CT images showed het- erogeneous masses with patchy, necrotic loci in 3 cases and homogeneous mass in 1 case. None of the tumors showed calci- fication. Enhanced CT images showed marked, heterogeneous enhancement in the 2 cases. Dynamic enhanced scan demonstrated mild homogeneous enhancement on artery phase and no enhancement on portal phase in 1 case, delayed enhancement and washout in another case. On T1 weighted MR images, there was heterogeneous mild hypointense in 1 case, and homogeneous isointensity in the other. On T2 weighted images, there was heterogeneous mixed intensity in 1 case and most- ly hyperintensive in another case. One case was presented as map - like heterogeneous enhancement and another presented as marked homogeneous enhancement. Conclusion Radiological findings of pelvic SFTs are variable and nonspecific, the final diagnosis depends on pathological and immunohistoehemieal results.

关 键 词：孤立性纤维瘤 计算机体层摄影 磁共振成像 病理学 

分 类 号：R730.4[医药卫生—肿瘤]