胸膜外孤立性纤维瘤的CT和MR诊断  

CT and MR diagnosis of extrapleural solitary fibrous tumor

作　　者：蒋玮丽[1] 彭红芬[1] 张东友[1] 

机构地区：[1]武汉市第一医院放射科,湖北武汉430022

出　　处：《中国临床医学影像杂志》2016年第1期19-21,共3页Journal of China Clinic Medical Imaging

摘　　要：目的:探讨胸膜外孤立性纤维瘤的CT和MR表现,以提高对本病的诊断水平。方法 :回顾性分析7例经手术病理证实的胸膜外孤立性纤维瘤的CT和MR表现。结果:7例中发生于腹部3例(其中腹腔、腹膜后、腹膜各1例),鼻窦及鼻腔、腮腺、腹股沟区、膀胱各1例。4例肿瘤呈圆形或卵圆形,3例呈分叶状,5例边界清楚,2例边界欠清,肿瘤直径2.0~9.1 cm,平均6.5 cm。CT扫描示2例密度均匀,4例密度不均,增强后1例呈早期轻度强化,另3例肿瘤动脉期明显强化,延迟期持续强化。MR T1WI呈低信号,T2WI呈略低信号1例,T1WI呈等信号,T2WI呈稍高信号1例,内部见条片状T2WI低信号。结论 :胸膜外孤立性纤维瘤可发生于全身任何部位,CT和MR表现具有一定特征性,多期增强扫描可以提高诊断准确性。Objective: To investigate CT and MR findings of extrapleural solitary fibrous tumor(ESFT) for imaging diagnosis. Methods: The CT and MR findings of 7 cases with ESFT proved by pathology were retrospectively analyzed. Results: In7 cases, 3 cases were located in the abdomen(intraabdominal, retroperitoneal and peritoneal respectively), and 1 in nasal cavity and sinuses, 1 in parotid gland, 1 in inguinal region and 1 in bladder respectively. All masses were solitary, four were round or oval, while 3 were irregular. Margins of 5 cases were well defined, while 2 were partly unclear. Diameters of the tumors ranged from 2.0~9.1 cm, and the average tumor size was 6.5 cm. The CT density was homogeneous in 2 cases and heterogeneous in 4 cases. Contrast enhanced CT showed early mild enhancement in 1 case, and obvious enhancement in the arterial and delay phases in 3 cases. On MR, one was hypointense on T1 WI and slightly hypointense on T2 WI. One was isointense on T1 WI and slightly hyperintense on T2 WI with strip hypointensity. Conclusion: ESFT can be found in any part of the body. CT and MR findings of ESFT were sometimes characteristic and multiphase contrast enhanced scan can improve the diagnostic accuracy.

关 键 词：纤维瘤 肿瘤 各部位 体层摄影术 螺旋计算机 磁共振成像 

分 类 号：R734.3[医药卫生—肿瘤] R730.44[医药卫生—临床医学] R445.2