肾上腺肿瘤CT征象分析

Analysis of CT signs of adrenal tumors

目的:探讨肾上腺肿瘤的CT表现。方法:对经手术病理证实的42例肾上腺肿瘤的CT表现进行回顾性分析。结果:肾上腺腺瘤19例,转移瘤9例,髓质脂肪瘤7例,腺癌4例,嗜铬细胞瘤3例。腺瘤呈类圆形,近似水样密度,边缘清楚锐利,均可见部分正常肾上腺。转移瘤外形无张力,呈类圆形或不规则形,边界清晰,不规则环形强化。髓质瘤病灶内密度不均,可见脂肪密度,边界清晰。皮质腺癌肿块巨大,密度不均,轻到中度絮状不规则强化,周围脏器受压移位。嗜铬细胞瘤呈囊实性肿块,病灶边界清楚、锐利,实性部分明显强化。结论:根据肾上腺肿瘤的CT表现可以明确肾上腺肿瘤的大小、数目、病理组织特点及与周围组织器官的解剖关系。CT横断扫描及多平面重建技术是肾上腺肿瘤术前检查的首选方法。

Objective：To evaluate display of CT scan in diagnosing of adrenal tumors. Methods：The CT features of adrenal tumors proved pathologically in 42 cases were reviewed. Results.Of 42 adrenal tumors, 19 cases were adenoma, 9 cases were metastatic, 7 cases were adrenal myelolipoma, 4 cases were adenocarcinoma and 3 cases were pheochromocytoma, Adenoma presented as homogenous water density mass. Metastatic tumor presented as irregular mass of heterogeneous density with ring of mass middle - level enhancement. Myelolipoma presented as uneven density mass with fat contents. Adenocarcinoma was the largest irregular mass of uneven density with uneven enhance. Pheochromocytoma was larger mass of heterogeneous density with marked enhancement. Conclusion ： CT can reflet the size, number,dissection and the pathologyical features of adrenal tumor by demonstrateing corresponding imaging features, CT scan and rendering technic is the first choice.