不典型肾上腺腺瘤的CT表现  

CT Features of Atypical Adrenal Cortical Adenoma

作　　者：孙宗琼[1] 岳建国[1] 谈旭东[1] 陈林[1] 江泓[1] 

机构地区：[1]江苏省无锡市第四人民医院放射科,214000

出　　处：《临床放射学杂志》2012年第9期1294-1297,共4页Journal of Clinical Radiology

摘　　要：目的分析15例典型及12例不典型肾上腺腺瘤的CT表现,以提高对不典型肾上腺腺瘤的认识和诊断水平。方法搜集经手术病理证实的27例肾上腺腺瘤患者的临床和CT资料,回顾性分析其常见及少见的影像征象,27例均做CT平扫和增强检查。结果 27例肾上腺腺瘤,不典型肾上腺腺瘤12例,其中单侧肾上腺2个腺瘤2例,双侧肾上腺腺瘤3例;腺瘤最大径>5 cm者6例,最大者直径18 cm,其内囊变、出血、钙化;增强后腺瘤明显强化4例;典型腺瘤15例。结论典型肾上腺腺瘤的CT表现是单侧单发,最大径<5 cm,平扫密度低且均匀,增强后腺瘤轻-中度强化;不典型腺瘤的CT表现为双侧发生或单侧多发,最大径>5 cm,CT平扫密度不均匀,增强后腺瘤明显强化。Objective To analyze the CT appearances of typical（ n = 15） and atypical（ n = 12） adrenal cortical adenoma（ACA）. Methods CT and clinical data of 27 cases with adrenal cortical adenoma confirmed by surgery and pathology were collected, common and uncommon CT features of adrenal cortical adenoma were analyzed retrospectively, all patients received plain and enhanced CT scanning. Results Of the 27 cases with ACA, 12 cases showed atypical image features, unilateral 2 adenomas （ n = 2 ） , bilateral adenomas （ n = 3 ）, the maximal diameter of the tumor was larger than 5 cm （ n = 6） ,the diameter of the maximal ACA was 18 cm and lesions had hemorrhage, calcification and cystic degeneration; ACA was remarkable enhanced after injection of contrast media （n =4） ,typical ACA was seen in 15 cases（n = 15）. Conclu- sion The typical CT features of ACA include unilateral and single lesion with the maximal diameter less than 5 cm, low and homogenous density before contrast administration, and mild to moderate enhancement after contrast administration. The atypical CT features of ACA include bilateral or unilateral and multiple lesions with the maximal diameter lager than 5 cm, heterogenous density before contrast administration, and remarkable enhancement after contrast administration.

关 键 词：肾上腺肿瘤 皮质腺瘤 典型与不典型 体层摄影术 X线计算机 

分 类 号：R736.6[医药卫生—肿瘤]