异位嗜铬细胞瘤的CT与MRI诊断

目的:探讨CT、MRI检查对异位嗜铬细胞瘤的诊断价值和检查方案。方法:回顾性分析有完整病史资料及手术病理结果的17例病例,其中CT检查15例,MRI检查10例。良性12例,恶性5例。结果:异位嗜铬细胞瘤发病率远远超过10%,并呈轻度青少年及男性成年优势分布,恶性比率达29.4%。CT诊断正确率为86.7%,MRI诊断正确率为100%。搜索性平扫、增强扫描和临床资料对诊断起关键作用。结论:CT、MRI是异位嗜铬细胞瘤定位定性诊断中有效的影像学方法,并能对良恶性肿瘤作出较准确的判断。

Imaging diagnosis of ectopic pheochromocytoma

Objective:To investigate the value of CT and MRI in diagnosing ectopic pheochromocytoma and the CT and MRI examination protocols.Methods:CT scan was performed in 15 patients and MRI were performed in 10 patients.CT and MRI findings of 17 cases(18 lesions) with pathologically-proved ectopic pheochromocytoma were retrospectively analyzed.Twelve benign and five malignant lesions were included in this study.Results:The incidence of ectopic pheochromocytoma was much higher than 10% as reported in the past literature.The ectopic pheochromocytoma seemed to have a predilection for adolescents and men.The incidence of malignant ectopic pheochromocytoma was rather high reaching 29.4%.The accuracy of CT diagnosis was 86.7% and MRI was 100% in this series.The clinical information,plain scan for screening and enhanced scan were very useful for accurate diagnosis.Conclusion:CT and MRI are effective imaging modality in diagnosis ectopic pheochromocytoma in localization and determination of the pathologic nature,and they can reach a high accuracy in differentiating benign and malignancy.