软组织肿块的MRI诊断价值探讨

The diagnostic value of MRI in soft-tissue masses

目的：探讨MRI在软组织肿块的诊断及良恶性鉴别中的价值。方法：软组织肿块82例,男44例,女38例,年龄2-63岁。术前分析MRI征象并结合临床作出MRI诊断,与手术、病理结果对照。结果：82例中45例（54.84%）术前MRI诊断与病理相符。67例肿瘤中,MRI诊断良性肿瘤的敏感性、特异性、准确性分别为93.48%、76.79%、82.14%,诊断恶性肿瘤分别为38.10%、72.73%、52.38%。肿块局部边界不清或浸润邻近组织结构并局部水肿是最可靠的恶性征象。结论：软组织恶性肿瘤特别是其早期的MRI恶性征象尚需进一步研究、总结。

Objective：To evaluate the value of MRI in diagnosing and distinguishing benign from malignant of soft-tissue masses.Methods：MRI diagnosis of 82 soft-tissue masses were made by analyzed the detail MRI signs and combined clinical materials befoc operation,and were compared with the findings of operation and pathology.Results：MRI diagnosis of 45（54.84%） soft-tissue masses 25 were agreed with pathologic diagnosis.In 51 cases of neoplastic lesions,the sensitivity,specificity,accuracy for benign tumor by MRI were 93.48%,76.79%,82.14%.As for malignant tumor,the results were 38.10%,72.73%,52.38% respectivly.The locally obscured boundary of masses or invited vicinity tissues companied with localized edema was reliable malignant sign.Conclusion：The malignant sign of soft-tissue malignant tumor（especially in its stage） demands to be studied further.