CAJ | 학술논문

目的：探讨少见部位炎性肌纤维母细胞瘤（IMT）的CT与MR表现，提高对其认识水平。方法回顾性分析6例经手术病理证实的IMT（直肠1例，双侧输尿管末端1例，腿部软组织3例，右肾1例）患者的影像学资料，其中2例行CT扫描，4例行MR扫描。结果直肠IMT呈边缘清楚的带蒂等密度实性肿块，增强扫描明显渐进性均匀强化。输尿管IMT呈边缘欠清的等密度实性肿块，增强扫描明显渐进性均匀强化。3例腿部软组织IMT呈境界清楚的软组织肿块，MRI平扫信号不一(1例T1WI序列呈等信号、T2WI序列呈混杂稍高信号，1例T1WI序列呈稍低信号、T2WI序列呈低信号，1例呈T1WI序列呈混杂稍高信号、T2WI序列呈混杂等信号)，增强扫描均明显强化。右肾IMT呈囊实性肿块，实性部分T1WI呈等信号、T2WI呈稍低信号，囊性部分T1WI呈稍高信号，T2WI呈高信号，增强扫描肿块实性部分及囊壁明显强化。结论 CT及MR能准确显示IMT的发生部位、大小、形态、累及范围，在定性诊断方面价值有限，确诊需依赖病理学检查。
목적：탐토소견부위염성기섬유모세포류（IMT）적CT여MR표현，제고대기인식수평。방법회고성분석6례경수술병리증실적IMT（직장1례，쌍측수뇨관말단1례，퇴부연조직3례，우신1례）환자적영상학자료，기중2례행CT소묘，4례행MR소묘。결과직장IMT정변연청초적대체등밀도실성종괴，증강소묘명현점진성균균강화。수뇨관IMT정변연흠청적등밀도실성종괴，증강소묘명현점진성균균강화。3례퇴부연조직IMT정경계청초적연조직종괴，MRI평소신호불일(1례T1WI서렬정등신호、T2WI서렬정혼잡초고신호，1례T1WI서렬정초저신호、T2WI서렬정저신호，1례정T1WI서렬정혼잡초고신호、T2WI서렬정혼잡등신호)，증강소묘균명현강화。우신IMT정낭실성종괴，실성부분T1WI정등신호、T2WI정초저신호，낭성부분T1WI정초고신호，T2WI정고신호，증강소묘종괴실성부분급낭벽명현강화。결론 CT급MR능준학현시IMT적발생부위、대소、형태、루급범위，재정성진단방면개치유한，학진수의뢰병이학검사。
Obojective To investigate the CT and MRI features of inflammatory myofibroblastic tumor(IMT) in unusual sites. Methods Six cases of IMT conifrmed by surgical pathology were retrospectively analyzed, including 1 rectal IMT, 1 bilateral ureteral IMT, 3 leg soft tissue IMT and 1right renal IMT. CT scan was performed in 2 patients and MRI was performed in other 4 patients.Results Plain CT showed isodensity pedunculated rectal IMT with an clear margin, which was obviously progressive enhanced after contrast enhancement. Bilateral ureteral IMT was showed as a isodensity solid mass with an unclear margin, which had a remarkable progressive enhancement. Plain MRI showed very different signal of 3 cases soft tissue IMT which were all signiifcantiy enhanced after contrast enhancement. Right renal IMT was seen as a Cystic or solid mass. the solid part showed isointensity on T1WI and slightly low intensity on T2WI. The cystic part was mildly hypointensity on T1WI but hypointensity on T2WI.The solid node and cystic wall enhanced after contrast enhancement.Conclusion CT and MR can accurately show the location, size, shape and involving scope of IMT, but has limited value in qualitative diagnosis, the deifnitive diagnosis was made by pathological examination.