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目的 :评估较大肾上腺嗜铬细胞瘤的MRI及DSA的诊断价值。材料与方法 :6例经手术病理证实的较大肾上腺嗜铬细胞瘤 ,均行MR平扫及腹主动脉、肾上腺动脉造影检查。结果 :6例MR表现均为长T1长T2 信号 ,2例见囊变和坏死信号。 5例主要波及肝右叶和肾上极 ,1例主要波及胰头并包绕下腔静脉。 6例中 ,4例疑诊嗜铬细胞瘤 ,2例诊断为巨块型肝癌。DSA显示瘤体由肾上腺动脉供血 ,肿瘤血管丰富 ,染色浓密 ,诊断为嗜铬细胞瘤。结论 :较大肾上腺嗜铬细胞瘤与邻近脏器肿瘤的MR表现极为相似 ,确诊须依赖肾上腺动脉造影。
Objective : To evaluate the diagnostic value of MRI and DSA in larger adrenal pheochromocytoma. Materials and Methods: Six patients with larger adrenal pheochromocytoma confirmed by operation and pathology underwent MR plain scan and abdominal aorta and adrenal arteriography. Results: The MR manifestations of all 6 cases were long T1 and long T2 signals, and 2 cases showed cystic and necrotic signals. Five cases mainly affected the right lobe of the liver and the upper pole of the kidney, and one case mainly affected the head of the pancreas and surrounded the inferior vena cava. Of the 6 patients, 4 were suspected to have pheochromocytoma and 2 were diagnosed as massive liver cancer. DSA showed that the tumor was supplied by the adrenal arteries. The tumors were rich in blood vessels and stained densely. The diagnosis was pheochromocytoma. Conclusion : The MR appearance of larger adrenal pheochromocytoma and adjacent organ tumors is very similar. The diagnosis depends on adrenal arteriography.