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目的探讨全身常见和非常见部位炎性肌纤维母细胞瘤(IMT)的CT、MRI表现。方法回顾性分析经手术病理证实的42例IMT患者的影像学资料。37例接受CT检查,6例接受MRI检查。结果 42例IMT发生于肺12例,肝脏8例,腹腔及腹膜后5例,胃5例,乳腺及头颈部各3例,膀胱2例,肾、脾、胆囊及大腿软组织各1例。肿瘤表现为实性软组织肿块32例,囊实性肿块10例。大部分病灶密度或信号不均匀,4例病灶内部可见钙化。增强扫描肿瘤实性部分均有“渐进性、持续强化”特点,内部囊变、坏死区无强化;少部分肿瘤可见边缘环状、内部分隔样强化。结论全身常见和非常见部位IMT的CT、MRI表现有一定的共同特征,CT及MRI检查能为IMT诊断与鉴别诊断及术后随访提供有价值的信息。
Objective To investigate the CT and MRI findings of inflammatory myofibroblastic tumor (IMT), a common and uncommon site in the body. Methods The imaging data of 42 patients with IMT confirmed by surgery and pathology were retrospectively analyzed. 37 patients underwent CT examination, 6 patients underwent MRI examination. Results 42 cases of IMT occurred in 12 cases of lung, liver in 8 cases, peritoneal and retroperitoneal in 5 cases, stomach in 5 cases, breast and head and neck in 3 cases, 2 cases of bladder, kidney, spleen, gallbladder and thigh soft tissue in 1 case. Tumors showed solid soft tissue mass in 32 cases, cystic solid mass in 10 cases. Most of the lesion density or signal is not uniform, 4 cases of internal calcification visible lesions. Enhance the solid part of the scan has “progressive, continuous enhancement ” features, internal cystic changes, no enhancement of necrotic areas; a small number of tumors showed edge ring, the internal partition-like enhancement. Conclusion CT and MRI manifestations of common and uncommon parts of the body have some common features. CT and MRI can provide valuable information for the diagnosis and differential diagnosis of IMT and follow-up after operation.