肾上腺恶性肿瘤的CT、MRI表现及其病理基础

目的：分析肾上腺恶性肿瘤(MAT)的 CT 和 MRI 表现，提高对本病的认识和影像诊断水平。方法收集、分析经临床病理证实的17例 MAT 的 CT、MRI 表现。CT 平扫17例，其中增强扫描14例；MRI 平扫3例，其中增强扫描2例；3例同时进行CT 和 MRI 扫描。结果肾上腺原发性恶性肿瘤8例，其中肾上腺皮质腺癌3例，神经母细胞瘤2例，恶性嗜铬细胞瘤、淋巴瘤、平滑肌肉瘤各1例；肾上腺转移瘤9例。肾上腺恶性肿瘤的平扫表现(肿块形态、大小、边缘、密度及信号)、增强(强化程度、方式)等特征有助于其诊断与鉴别诊断。结论部分 MAT 具有一定特征性的 CT、MRI 表现，结合相关临床资料，可在术前做出正确诊断。

Malignant adrenal tumors:CT and MRI findings with corresponding pathological basis

Objective To study the CT and MRI features of malignant adrenal tumors(MAT)for improving the understanding of the disease and imaging diagnosis.Methods CT and MRI findings were retrospectively reviewed in 1 7 patients with MAT proved by surgical pathology.CT scan was performed in 1 7 cases,and CT enhancement scan was performed in 14 cases;MRI scan was comple-ted in 3 cases,and MRI enhancement scan was performed in 2 cases;CT and MRI scans were examinated in 3 cases.Results Among 1 7 patients with MAT,there were 3 adrenocortical carcinomas,2 neuroblastomas,1 malignant pheochromocytoma,1 lymphoma,1 leiomyosarcoma,and 9 adrenal metastatic tumors.The CT and MRI characteristics in size,shape,boundary,density or signal,and en-hancement features,can discriminate MAT.Conclusion CT and MRI findings of some MAT have a certain characteristic;The ima-ging findings combined with clinical data are helpful in correctly making preoperative diagnosis.