脂肪肉瘤的CT、MRI表现与病理学对照  

CT and MRI Manifestations of Liposarcoma with Pathologic Features

作　　者：林翠君[1,2] 李丽红[1,2] 黄春榆[1,2] 黄柏锋[1,2] 易智君[1,2] 

机构地区：[1]中山大学 [2]广东医学院附属惠州医院(惠州市中心人民医院)放射科,广东惠州516008

出　　处：《中国CT和MRI杂志》2015年第8期108-111,共4页Chinese Journal of CT and MRI

摘　　要：目的探讨脂肪肉瘤的CT、MRI表现特点。方法回顾性分析25例经手术病理证实为脂肪肉瘤的患者资料,分析其CT、MRI的影像学表现与病理结果的关系。所有病例均行CT或MRI平扫和增强扫描;由于这些病例都是回顾性分析,所以并不是每个病例都均有CT和MRI图像的完整资料。结果粘液型脂肪肉瘤13例,均表现为介于水与软组织之间的液体密度或信号,含有少量脂肪密度或信号,增强扫描轻度强化或絮状、网状明显强化;高分化脂肪肉瘤9例,均表现为以脂肪密度或信号为主的肿块,增强后仅见间隔或实性部分轻微强化;去分化脂肪肉瘤2例,表现为以实性肿块为主、含有或多或少量的脂肪密度或信号,增强扫描实性部分明显强化;小园细胞脂肪肉瘤1例,表现为仅有实性肿块,无脂肪成分,增强扫描明显不均匀强化;本组无多形性脂肪肉瘤。结论不同组织亚型的脂肪肉瘤的CT、MRI表现不同,取决于其组织学成分。Objective To assess the CT and MRI imaging features of liposarcoma. Methods 25 cases of liposarcoma proved pathologically were retrospectively studied.All patients underwent CT or MRI examination before and after intravenous administration of contrast agent.Because this study was a retrospective review,complete imaging data were not available for each patient. Results 13 of Myxoid liposarcomas consists of myxoid matrix as the predominant component and small amounts of mature fat,showed light enhancement or enhancement with inhomogeneous and flocculent strengthen.9 of Welldifferentiated liposarcomas showed masses with fat-density and fewer enhancement.2 of Dedifferentiated liposarcoma was demonstrated as fat-density containing soft tissue,showed moderate to the marked homogenous enhancement in the non-fatty areas.1 of Roundcelled liposarcoma displayed as soft tissue mass containing no fat,showed inhomogeneous and strong enhancement.There is not pleomorphic liposarcoma in this study. CCoonncclluussiioonn Different subtypes of liposarcomas exhibited varying CT and MRI features,depending on their histological components.

关 键 词：脂肪肉瘤 CT MRI 病理 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.9[医药卫生—诊断学]