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目的探讨肾上腺嗜酸细胞腺瘤的CT表现特征,以提高对该病的诊断水平。方法回顾性分析经手术病理证实的7例肾上腺嗜酸细胞腺瘤患者的CT资料,7例均行CT平扫及增强扫描。结果 7例中,左侧5例,右侧2例。肿瘤直径2~8.9 cm,平均5.0 cm。肿瘤平扫呈等密度,与肾脏相似。平扫CT值22~50 HU,平均38.3HU;动脉期CT值49~173 HU,平均90 HU,静脉期CT值61~141 HU,平均92.9 HU。3例肿块动脉期可见显著强化的不规则肿瘤血管。所有肿瘤境界清楚,6例可见包膜,肿瘤侵犯包膜1例。4例肿瘤推移周围血管及器官。结论肾上腺嗜酸细胞腺瘤多表现为肾上腺区较大的软组织肿块,平扫呈等密度,增强明显强化,境界清楚,有包膜。
Objective To investigate the CT features of adrenocortical oncocytoma in order to improve the diagnosis of the disease. Methods The CT data of 7 adrenocortical adenoma patients confirmed by surgery and pathology were analyzed retrospectively. All the 7 patients underwent CT scan and enhanced scan. Results In 7 cases, there were 5 cases on the left and 2 cases on the right. Tumor diameter 2 ~ 8.9 cm, an average of 5.0 cm. Tumor showed equal density, similar to the kidney. CT scan value of 22 ~ 50 HU, an average of 38.3HU; arterial phase CT value of 49 ~ 173 HU, an average of 90 HU, venous phase CT value 61 ~ 141 HU, an average of 92.9 HU. Three cases of tumor showed significant enhancement of the irregular arteriolar tumor vessels. Clear all the realm of the tumor, 6 cases of visible capsule, tumor encroachment in 1 case. 4 cases of tumor around the blood vessels and organs. Conclusion Adrenal eosinophilic adenoma mostly presents with large soft tissue mass in the adrenal gland. The isthmus shows isodense density and enhances obvious enhancement with clear envelopment.