摘要
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 the large adrenal pheochromocytoma.Methods:6 patients with adrenal pheochromocytoma proved by operation and pathology were performed MRI and adrenal arteriography.Results:On MRI,the tumor of 6 cases was presented as long T1 and T2 relaxation time,and cystic or necrotic signal intensity was shown in 2 of the 6 cases.Right hepatic lobe and the upper pole of kidney were invaded by tumor in 5 cases,and invasion of the head of pancreas with encasement of IVC by tumor was seen in 1 case.Among 6 cases of MRI,4 were diagnosed as adrenal pheochromocytoma,and 2 were misdiagnosed as hepatocellular carcinoma.DSA demonstrated all of the tumors with hypervascularity supplied from adrenal arteries and tumor staining,and therefore,a resultant diagnosis of adrenal pheochromocytoma was made.Conclusions:DSA is necessary for diagnosing large adrenal pheochromocytoma in some cases,since it is poorly differentiated from the tumor of adjacent organs on MRI.
出处
《放射学实践》
2000年第4期251-253,共3页
Radiologic Practice
关键词
肾上腺嗜铬细胞瘤
磁共振成像
DSA
Pheochromocytom Magnetic resonance imaging Digital subtraction angiography
