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目的探讨CT、MRI诊断肾上腺皮质腺瘤临床诊断符合率。方法对我院从1999～2005年间经手术、病理证实的16例肾上腺皮质腺瘤的CT或/和MRI检查资料进行对比分析。其中男性9例,女性7例,年龄为24～65岁,平均年龄43岁。检查设备为GE980型CT机,GE Prospeed SX Advantage型螺旋CT机,GE1.0T Signa Horizon LX型磁共振设备,行CT或/和MRI平扫,然后行产强检查。结果16例均为单侧发病,其中右侧11例,左侧5例。最小病灶为9×12mm,最大病灶为170×120mm。CT表现为肾上腺区圆形或椭圆形低密度或等密度影,边缘部分清楚,增强可显示部分强化,MRI表现为T1WI类似肝实质信号,T2WI接近或高于肝实质信号。结论①肾上腺皮质腺瘤CT、MRI表现有一定的特征性;②结合临床资料,肾上腺皮质腺瘤能与部分肾上腺病变鉴别。
Objective To investigate the diagnostic accuracy of CT and MRI in the diagnosis of adrenocortical adenoma. Methods The CT and/or MRI examinations of 16 adrenocortical adenomas confirmed by surgery and pathology in our hospital from 1999 to 2005 were compared. Among them, there were 9 males and 7 females, aged from 24 to 65 years old, with an average age of 43 years. The inspection equipment is GE980 type CT machine, GE Prospeed SX Advantage type spiral CT machine, GE1.0T Signa Horizon LX type magnetic resonance equipment, CT scan and/or MRI plain scan, and then strong inspection. Results All 16 cases were unilaterally affected, including 11 cases on the right side and 5 cases on the left side. The smallest lesion was 9 x 12 mm and the largest lesion was 170 x 120 mm. CT showed adrenal area round or oval low-density or isodensity shadow, the edge part is clear, the enhancement can show partial enhancement, MRI showed T1WI-like liver parenchyma signal, T2WI close to or higher than the liver parenchyma signal. Conclusion 1 CT and MRI features of adrenocortical adenoma have certain characteristics; 2 combined with clinical data, adrenocortical adenoma can be differentiated from some adrenal lesions.