基于病理分型的腹部炎性肌纤维母细胞瘤的CT表现

CT Findings of Abdominal Inflammatory Myofibroblastic Tumor Based on the Pathology

目的探讨腹部炎性肌纤维母细胞瘤(IMT)的病理及CT表现,提高对该病的诊断。方法对12例经手术病理证实的腹部IMT的CT及临床资料进行回顾性分析。结果 12例IMT中,位于肝脏3例、胃1例、直肠1例、肠系膜及腹膜3例、腹膜后4例;病变均边界清楚,呈圆形或类圆形或不规则型,最大直径约2.5-17.0cm;8例呈实性肿块,4例呈囊实性肿块。CT平扫所有病例的实性部分呈等或低密度,增强后,6例呈稍不均匀中等强化,2例呈均匀强化,4例囊实性肿块的实性部分明显强化。结论腹部IMT除具有病变边界清楚,呈圆形、类圆形或不规则形等共同特征外,不同病理类型病灶CT表现具有一定的个性特征,CT对其诊断及病理分型具有一定价值。

Objective To investigate the CT characters and corresponding pathological bases of abdominal inflammatory myofibroblastic tumor(IMT).Methods The CT and clinical data of 12 IMT cases confirmed by surgery and pathology were analyzed retrospectively.Results Among 12 cases,3 cases were found in liver,1 case in stomach,1 case in rectum,3 case in mesentery and peritoneum,and 4 in retroperitoneum.The tumors showed welldefinded round or similar round or irregular in shape.The range of maximum diameter was 2.5 to 17.0 cm.CT presented solid mass in 8 cases,cystic and solid mass in 4 cases.The solid part of all the cases showed hypodense or isodense on non-enhanced CT.The enhancement patterns of 12 cases were various,6 cases showed heterogeneous moderate enhancement,2 cases showed homogeneous enhancement,the solid part of 4 cases with cystic and solid tumors showed marked enhancement.Conclusion The CT findings of abdominal IMT show certain common characters like round,similar round or irregular mass with well-definded margin.The enhanced CT of different pathological types can show certain individual characters,which may provide some values for the diagnosis and pathological types.