肾上腺神经纤维瘤的CT表现

CT findings of adrenal neurofibroma

目的:探讨肾上腺神经纤维瘤(ANF)的CT表现及其诊断价值。方法:搜集本院2001年-2016年经手术和病理证实的18例ANF患者的病例资料,其中男性8例,女性10例,年龄<20岁2例,20~40岁11例,>40岁5例。分析18例ANF的CT表现,并结合近年文献进行总结。结果:本组18例ANF患者,病灶部位右侧11例,左侧7例。肿瘤直径3.0~10.0cm,平均5.9cm。CT平扫表现为等或稍低密度,其中2例较大者可见液化坏死,5例见斑点状、小片状钙化,占27.8%,最大的肿瘤表现为低密度并可见分层。CT增强扫描表现为无强化、轻度强化或延迟强化。16例肿瘤与邻近组织分界清楚,占88.9%,2例较大者与右肾上级及下腔静脉有粘连,占11.1%;18例患者均未发现肿瘤周围及腹腔内肿大淋巴结。结论:肾上腺神经纤维瘤CT表现有一定特征,结合其临床表现能够做出提示性诊断。

Objective：To investigate the CT features and their value in the diagnosis of adrenal neurofibroma （ANF）. Methods：The clinical materials of 18 cases in our hospital （from 2001 to 2016） with surgery and pathology confirmed ANF were collected. Of the 18 patients,there were male （8 cases） and female （10 cases）, with the age 〈20y （2 cases） ,between 20y to 40y （11 cases） and 〉40y （5 cases）. The CT features of ANF were analyzed and literatures were reviewed. Results： Of the 18 ANF,the location was right side （11 cases） and left side （7 cases）. The diameter of tumor ranged from 3cm to 10cm （m=5.9cm）. Isodensity or slightly high density was shown on plain scan. Two cases with bigger lesion had liquefaction and necrosis. Five cases （27.8%） showed spot-like or small pieces of calcification. The biggest tumor showed low den- sity and stratification. No enhancement, mild enhancement or delayed enhancement could be assessed after contrast administration. 16 cases （88.9%） had clear boundary,the other 2 cases （11.1%） had adhesion with upper pole of right kidney and inferior vena cava. No lymphadenopathy could be found within abdomen or adjacent to the tumor. Conclusion： Certain characteristic CT findings of adrenal neurofibroma could be revealed and provide helpful information to make a suggestive diagnosis as in combination with the clinical manifestations.