论文部分内容阅读
目的 分析侵袭性血管黏液瘤(aggressive angiomyxoma,AAM)基于病理变化的特征性CT和MRI影像,提高AAM的影像诊断率.方法 回顾性分析5例经手术病理证实的AAM患者的CT和MR影像,对比分析其病理变化及影像特征.结果 5例病灶均位于盆腔或会阴部,CT平扫均为等及稍低密度,3例增强后实性成分缓慢强化,其中1例出现漩涡样或分层状强化.MR扫描显示,5例病灶呈T2WI高低混杂信号,2例出现典型漩涡状或分层样改变,增强后3例缓慢强化.结论 AAM好发于女性盆腔内及会阴部,肿块多为囊实性.CT及MR增强扫描缓慢强化,肿块内漩涡样及分层样改变为其特征性改变.“,”Objective To improve the imaging diagnosis rate of aggressive angiomyxoma (AAM) by analyzing CT and MRI imaging features based on pathological changes of AAM.Methods 5 AAM patients confirmed by operation and pathology were given CT and MR scan retrospectively to analyze the imaging features and pathological changes.Results Non-contrast CT scan of 5 cases showed equal or low density.3 cases were given enhanced scan with slow enhancement in solid composition,while 1 case showed typical vortex like or layered changes.MR scan of 5 cases showed mixed high or low signals on T2WI,2 cases showed typical vortex like or layered change,and 3 cases given enhanced scan showed slow enhancement.Conclusion AAM occurs primarily in the pelvic cavity and perineum,mostly are solid-cystic mass.Slow enhancement in MR and CT enhanced scan and vortex and layered like changes in tumor tissues are its characteristic changes.