腹腔炎症性肌纤维母细胞瘤的影像表现

目的：探讨腹腔炎症性肌纤维母细胞瘤(IMT)的 CT、MRI影像特征。方法回顾性分析经手术病理证实的8例腹腔IMT患者的临床及影像学资料。5例行CT增强扫描,3例行 MRI增强扫描。结果肿物位于肠系膜3例,横结肠1例,腹膜后1例,小网膜1例,大网膜2例。8例均为单发病灶,5例边界清楚,3例边界不清。病灶最大直径4.6~12.5 cm。CT扫描2例密度均匀,3例密度不均匀。5例CT增强扫描明显强化3例,轻度强化2例；3例 MRI增强表现,1例为边界清晰的实性软组织肿块,均匀强化；2例为囊实性肿物,增强扫描病灶实性部分呈明显均匀强化,囊性区无强化。结论 CT、MRI能清楚显示 IMT的位置、大小、数量及其与周围组织的关系。

The imaging manifestations of abdominal inflammatory myofibroblastic tumor

Objective To investigate the CT and MRI manifestations of abdominal inflammatory myofibroblastic tumor (IMT). Methods Imaging and clinical data of 8 cases with IMT which proved by pathology were analyzed retrospectively.5 cases were scaned with contrast medium enhancement CT,and 3 cases with contrast medium enhancement MRI.Results Tumors were located in mesenteric region in 3 cases,in the transverse colon in 1 case,in retroperitoneal space in 1 case,in the small omentum in 1 case, in the omentum in 2 cases.8 cases were all single lesion,5 cases boundaries were demarcated,3 cases boundaries were fuzzy.The maximum diameter of tumors were from 4.6-12.5 cm.The density were uniformin 2 cases,and uneven in 3 cases.3 cases were significantly enhanced on enhanced scanning,2 cases were slight enhanced.1 case was solid soft tissue mass with homogeneous enhancement.2 cases were cystic tumor.The solid part was obvious homogeneous enhancement on enhanced scanning.The cystic areas were not enhancement. Conclusion CT and MRI can clearly demonstrate the location,size,number and the relationship with the surrounding structures of IMT.