腹部巨大脂肪肉瘤 CT、MRI 表现及病理对照分析  

CT and MRI features of abdominal huge liposarcomas correlated with pathology

作　　者：李健[1] 谢凯[1] 龚洪翰[1] 廖婷 王慧芳[1] 况红妹[1] 张慧芳[1] 

机构地区：[1]南昌大学第一附属医院影像科,江西南昌300006 [2]高安市人民医院放射科

出　　处：《实用放射学杂志》2016年第2期224-227,共4页Journal of Practical Radiology

摘　　要：目的：探讨腹部巨大脂肪肉瘤的 CT、MRI 表现,以提高术前诊断准确率。方法回顾性分析经手术病理证实的17例腹部巨大脂肪肉瘤的 CT、MRI 表现,并与病理各亚型进行对照分析。结果17例中,16例位于腹膜后,1例位于腹腔。肿块平均最大径约17 cm,其中分化良好型7例,CT、MRI 大多以脂肪密度为主,增强后轻度强化,1例硬化型含大量斑片状钙化,1例硬化型无脂肪成分,3例为多发病灶。黏液型5例,CT、MRI 表现为囊性密度及信号,增强后可见云絮状、网格状轻中度强化。去分化型2例,脂肪和软组织混杂,两者分界清楚,软组织肿块呈不均匀明显强化。混合型 3例,具有以上各型影像学表现,2例不含脂肪成分。结论脂肪肉瘤病理亚型多样,各亚型 CT、MRI 影像表现具有一定特征性。Objective To investigate CT and MRI features of abdominal huge liposarcoma,and improve the preoperative diagnostic accuracy. Methods The CT and MRI findings of 1 7 cases with abdominal huge liposarcoma proved by operation and pathology were analyzed and correlated with pathologic subtypes retrospectively.Results In 17 cases,16 cases were located in retroperitoneal,1 case was located in the abdominal cavity.The average maximal diameter of the lesions was 17 cm.In all cases,main components of well differentiated liposarcomata （n=7） were fat density on CT and MRI,and enhanced slightly,3 cases were multiple lesions,1 case of sclerosing liposarcoma contained massive patchy calcification,1 case was fatless.Myxoid liposarcoma （n=5）were similar to cystic on CT and MRI features,enhanced with latticed or cloudy components slightly to moderately .Dedifferentiated liposarcoma （n=2）has both fat and soft tissue inside and the dividing line was clear.The soft tissue mass unevenly obviously enhanced.Mixed liposarcoma （n=3）had the imaging characteristics above different types,2 cases contained no fat composition.Conclusion Liposarcoma pathological subtype has diversity,and various subtypes have certain characteristic on CT and MRI imaging features.

关 键 词：脂肪肉瘤 腹部 计算机体层成像 磁共振成像 病理学 

分 类 号：R738.6[医药卫生—肿瘤] R814.42[医药卫生—临床医学]