脂肪成分在肾上腺髓样脂肪瘤CT和MRI诊断中的价值  

Value of fat content in the CT and MRI diagnosis of adrenal myelolipoma

作　　者：刘发权[1,2,3] 孟瑜[1,4,5] 胡道予[1] 

机构地区：[1]华中科技大学同济医学院附属同济医院放射科,武汉430030 [2]三峡大学中医临床医学院 [3]宜昌市中医院放射科,湖北443003 [4]宜昌市第一人民医院 [5]三峡大学附属人民医院放射科,湖北443003

出　　处：《放射学实践》2011年第12期1279-1282,共4页Radiologic Practice

摘　　要：目的:探讨肾上腺髓样脂肪瘤(AML)的分型、CT表现,分析脂肪含量对该病的诊断价值。方法:回顾性分析24例肾上腺髓样脂肪瘤的CT特征及临床、病理资料,利用后处理技术测定瘤体内脂肪含量。结果:本组24例肾上腺髓样脂肪瘤,右侧15例,左侧9例,瘤体直径为5～9cm,边界光整,呈圆形或类圆形。24例瘤体均含脂肪,脂肪含量>50%有17例,其中9例脂肪含量占75%以上;脂肪含量<50%有7例,其中2例脂肪含量约在20%以下。增强后软组织成分轻至中度强化,脂肪成分均无强化;5例见点、条状钙化。结论:CT扫描对肾上腺髓样脂肪瘤具有较高的敏感性及特异性,瘤体脂肪含量能为诊断及鉴别诊断提供一定的依据。Objective：To investigate the subtypes and CT features of adrenal myelolipoman（AML） and analyse the value of its fat content in the diagnosis.Methods：The CT features,clinical manifestations and pathological datas of 24 patients with adrenal myelolipoma were retrospectively analyzed.The fat content was measured by post-treatment techonology.Results：Among 24 cases,15 lesions were located on the right side,9 lesions on the left side,the diameters were from 5 to 9cm,the border was smooth,the shape was round or oval.All 24 cases of adrenal myelolipoma contained fat,with more than 50% in fat content in 17 cases and more than 75% in 9 of these 17 cases;less than 50% in 7 cases and less than 20% in 2 cases.After enhancement,soft tissue component enhanced mildly or moderately,fatty tissue did not enhanced.Spotty or streaky calcification were observed in 5 cases.Conclusion：CT scanning shows high sensitivity and specificity in the diagnosis of AML.The fat content provides some evidence for the diagnosis and differential diagnosis of AML.

关 键 词：肾上腺髓脂瘤 脂肪含量 体层摄影术 X线计算机 磁共振成像 

分 类 号：R736.6[医药卫生—肿瘤] R814.42[医药卫生—临床医学]