小儿肾上腺嗜酸细胞腺瘤临床CT、MRI诊断

CT and MRI Diagnosis of Pediatric Adrenal on Cocytomas

目的探讨小儿肾上腺嗜酸细胞腺瘤(AOC)临床CT、MRI特征及诊断要点。方法回顾性分析经手术病理证实的3例AOC临床及CT、MRI资料,结合文献着重总结、分析其CT、MRI影像特点。结果3例均为女性,年龄8~9岁,临床表现为男性化2例、性早熟1例,均伴不同程度内分泌异常。肿瘤均单发,其中右侧1例、左侧2例,肿块平均长径4.87 cm,密度/信号较均匀且较均匀持续强化,边界清楚,包膜完整并延迟强化;1例见瘤内含脂结节。结论AOC具有一定CT、MRI影像特点,结合内分泌异常表现,多能提示诊断。

Objective To investigate the clinical CT and MRI features and diagnostic criteria of adrenal oncoctyoma(AOC)in children.Methods The clinical,CT and MRI data of 3 cases with AOC confirmed by surgery and pathology were collected and analyzed retrospectively,and the CT and MRI appearances were emphatically summarized in combination with the literature.Results The 3 patients were all female,aged from 4 years 2 months to 11 years 8 months,with an average of 7.9 years.The clinical manifestations were virilisation in 2 cases and precocious puberty in 1 case,with different degrees of endocrine abnormalities.All tumors were singlewith well-circumscribedlarge solid mass,and 2 on the leftas well asthe other one on the right adrenal glands.Characteristicfibrous encapsulation with delayed enhancement was intactin every mass.The average length of the tumor was 4.87 cm,with more homogeneous density/signal and homogeneously continuous enhancement.One case showed a nodulewithinrich lipid composition in the tumor mass.Conclusion A AOC has some characteristics on CT and MR imaging,which can prompt the diagnosis combined with hormone secreting behavior.