肾上腺皮质大腺瘤超声表现

目的分析肾上腺皮质大腺瘤（直径≥4．0em）超声声像图表现。方法回顾性分析2006年1月至2012年8月中国医学科学院肿瘤医院经手术及病理证实的13例肾上腺皮质大腺瘤（直径≥4．0cm）患者的超声声像图表现。结果13例肾上腺皮质大腺瘤患者均为单侧单发。13个肾上腺皮质大腺瘤均有完整包膜，肿瘤直径为4．0～8．8cm，平均（5．5±1．6）cm。3个呈均匀低回声，10个内部回声不均，其中7个肿瘤内部呈结节样低回声及高回声分隔；3个肿瘤内见无回声区；3个肿瘤内见粗大强回声伴后方声影；2个肿瘤内见斑片状高回声。彩色多普勒血流成像示肿瘤内部无或少量血流信号。结论肾上腺皮质大腺瘤具有包膜完整，回声混杂，可伴分隔、钙化、液化坏死等特点，以上特点均与常见肾上腺腺瘤超声表现不同，超声医师应提高对该病的认识。

Ultrasonic manifestations of large adrenal cortical adenoma

Objective To analyze the sonographic findings of large adrenal cortical adenoma. Methods The sonographic characteristics of thirteen cases of large adrenal cortical adenoma （diameter 〉/4.0 am） which were diagnosed by surgery from January 2006 to August 2012 were retrospectively reviewed. Results In all cases, the adenomas had distinct margins. The mean size of lesions was （5.5 -4-1.6） cm, ranging from 4.0 crn to 8.8 cm. On echotexture, three lesions were homogeneous and the remaining ten lesions were heterogeneous. In addition, seven contained hypoechoic nodules and hypercchoic septum, three had anechoic area, three had extremely hyperechoic area with acoustic shadow, and two had patchy hyperechoic area. On Doppler, most lesions had no flow signal. Conclusions Large adrenal adenomas have complete capsule and heterogeneous internal echoes with septum, calcification, necrosis and hemorrhages. These characteristics are less frequently seen incommon adrenal adenoma, therefore may be helpful in recognition of large adrenal adenoma in clinical practice.