【作者】 孙清荣； 卫静； 王文献； 陈垦；

【Author】 SUN Qing-rong, WEI Jing, WANG Wen-xian,et al. Department of Radiology, Xinqiao Hospital, Third Military University, Chongqing 400037, China

【机构】 重庆市第三军医大学新桥医院放射科；

【摘要】 目的:探讨四肢软组织肿瘤的影像学诊断价值。方法:54例原发性四肢软组织肿瘤,CT检查23例,MRI31例。结果:良性34例、恶性20例。CT检查与病理符合11例,MB/24例;定性错误和未定性CT 12例,MR 7例。软组织肿瘤CT的特点是低密度肿块,脂肪瘤、囊肿有典型CT表现;MRI表现各异,脂肪瘤在短返转恢复(STIR)序列具有与皮下脂肪同步降低特点。血管性肿瘤,血管流空信号为其特征性表现。良性肿瘤信号多均匀,边缘规则和光滑。恶性肿瘤呈混杂信号,STIR序列可显示肿瘤浸润性生长的边缘及与正常组织相交形成的移行带,故恶性肿块大于T2WI瘤灶。结论:影像学检查对四肢软组织肿瘤诊断有重要价值,CT定性有难度。MBI有一定特征性,结合STIR序列,有助于良恶性鉴别。更多还原

【Abstract】 Objective:To investigate the diagnostic value of imaging in extremity soft tissue tumours .Methods:54 cases of extremity soft tissue tumours were examined. CT scanning were obtained in 23cases, MR imaging were studied in Slcases. Results: There were 34 cases of benign tumors and 20 cases of malignant tumors. The CT findings of 11 cases accorded with pathology and the MRI findings of 24 cases accorded with pathology. The diagnosis of 12 cases on CT and 7 cases on MRI were wrong. The CT features of soft tissue tumours were low density masses. The features of lipoma or cyst were typical on CT and were different on MRI. Lipoma had the same feature with fat on STIR. No signal blood vessels was diagnostic for haemangioma. The signals were homogeneous in benign tumors with clear border and were mixed in malignant tumors. The margin from tumor to normal tissue can be presented on STIR, so the masses were bigger on STIR than on T2WI. Conclusion:The imaging is valuable for extremity soft tissue tumours. The malignant tumors can be differentiated from benign tumors according to MRI characteristics.更多还原