目的：探讨肺外炎性肌纤维母细胞瘤（IMT）的超声表现。方法：回顾性分析7例经穿刺活检及手术病理组织证实的 IMT 患者超声图像，其中男性3例，女性4例，年龄5～71岁，平均年龄47．1岁。病程1个月～13年。分析病变的发生部位、大小、形态、边界、内部回声、血流信号及有无转移等特点。结果：位于腹腔2例，盆腔2例，前臂、腹股沟、臀部各1例。3例瘤体最大径＞5cm，4例瘤体最大径＜3cm。5例瘤体形态规整，2例瘤体形态不规整。6例瘤体边界清楚，1例瘤体边界不清楚。5例瘤体为低回声，2例为囊实混合回声。2例瘤体血流信号不丰富，5例血流信号丰富。7例 IMT 均未发现转移灶。免疫组织化学检测显示：肿瘤细胞表达 Vimentin、SMA、MSA、Desmin，其阳性率分别为100％、100％、100％、47．6％。结论：超声检查能清楚显示 IMT 的部位、大小、形态、边界、内部回声、血流信号及其有无转移等，但超声图的表现无特异性，确诊依赖病理学及免疫组织化学检查。%Objective:To investigate the features of ultrasound images of inflammatory myofibroblastic tumor (IMT).Methods:A total of 7 patients with IMT proved by biopsy and pathological were analyzed retrospectively,in-cluding 3 males and 4 females,aged 5 ~71 years old with a mean age of 47.1 and duration from 1 month to 13 years. The imaging features of location,size,morphology,border,internal echo,blood flow and metastasis were investigated and recorded.Results:Two cases were located in abdominal cavity,2 cases in pelvic cavity and one in forearm,groin, buttock.The maximum diameters of tumor in 3 cases were larger than 5cm and 4 cases were less than 3cm.5 cases had regular contour and 2 had irregular shape.6 had clear borders and 1 had unclear border.5 cases were hypoecho and 2 cases were mixed cystic and solid echo.The blood flow of 2 cases was abundant and 5 cases were not.No metas-tasis was found in all cases.Immunohistochemistry showed that the positive rates of Vimentin,SMA,MSA and Desmin were 100%,100%,100%,47.6%.Conclusion:Ultrasound imaging could clearly display the location,size,morphol-ogy,border,internal echo,blood flow and metastasis of IMT,however,no specificity was found.So the final diagnosis relies on pathology and immunohistochemical examinations.
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