MRI在四肢软组织肿瘤及肿瘤样病变诊断中的应用  

Clinical value of MRI in diagnosis of the soft tissue neoplasms and tumorlike lesions in the limbs

作　　者：贺敬红[1] 郑敏文[1] 张劲松[1] 彭勇[1] 

机构地区：[1]第四军医大学西京医院放射科,陕西西安710032

出　　处：《实用放射学杂志》2012年第1期81-84,共4页Journal of Practical Radiology

摘　　要：目的分析四肢软组织肿瘤及肿瘤样病变的MRI影像学特征。方法同顺忡分析终病理证实的38例四肢软组纵肿及肿瘤样病变的MRI表现。结果明融的瘤周水肿（36．84%）仅见于恶性肿瘤及旱侵蚀性生长的良性痫变：邻近结构受侵征象住恶性肿瘤小的出现率（63．64％）叫显高于良性（18．52％）；10cm大小分料埘峪别良恶性仃特件性；信号分布均匀性程度及边抖清楚程度存良、恶性病变中有较高的重叠性。良性肿瘤MRI的组织学定性准确率（77．78％）高于恶性（36．36%）、结论综合分析肿瘤MR征象对鉴别四歧软组织肿瘤及肿瘤样病变的良、恶性有价值。Objective To study MR imagingcharacterislics of the soft tissue neoplasms and tumor like lesions in the limbs. Methods MRI features of the soft tissue neoplasms and tumor like lesions in the limbs confirmed by palhology in 38 cases were retro spectively analyzed . Results Marked perineoplastie edema was presented in 14 of 5 eases （36.84%） , including 9 maligmmte sions and 5 benign ones with eroside features . The incidence of the invasive signs of the adjacent struetures in malignant neoplasms （63.6,l%） was significantly higher than that in benign ones （18.52%）. There was specificity of 10 cm in diameter of the lesions in differentiating benign from malignant lesions. The obvious overlap of the rate of homogeneous signal intensily and distinet boundary existed belween benign and malignant lesions. The rate of histological qualitation in benign neoplasms（ 77. 78%） was significantly higher than malignant ones（36.36 % ）. Conclusion It is of significant values in differentiating benign from malignant soft tissue neo plasms and tumorlike lesions in the limbs to analyse synlhe/ically MR imaging features.

关 键 词：软组织肿瘤 肿瘤样病变 磁共振成像 

分 类 号：R738.6[医药卫生—肿瘤] R445.2[医药卫生—临床医学]