目的:研究肾上腺外腹膜后副节瘤CT、MRI表现。方法:本组经手术病理证实14例,其中男7例,女7例,平均年龄39.2岁。其中功能性副节瘤8例,非功能性副节瘤6例;良性9例,恶性5例。CT平扫检查9例,其中5例作了强化扫描;MRI检查6例。结果:病变<10cm者9/11例良性,>10cm3/3恶性;<5cm者5/6例功能性,>5cm者6/8例为非功能性。CT密度和MRI信号强度对鉴别良恶性作用不大,但出现明确囊变恶性多见(4/5例),有明确侵犯者4/4例恶性。结论:腹膜后副节瘤的CT、MRI表现多样,其大小、囊变及侵犯对鉴别良恶性有帮助。 Objective: To study the CT and MRI features of the adrenal extraperitoneal paraganglioma. Methods: 14 cases were confirmed by operation and pathology in this group, including 7 males and 7 females, with an average age of 39.2 years. Among them, 8 were functional paragangliomas, 6 were non-functional paragangliomas, 9 were benign, and 5 were malignant. CT scans were performed in 9 patients, of which 5 patients underwent enhanced scans and 6 patients underwent MRI. Results: 9/11 cases with lesions less than 10cm were benign, >10cm3/3 malignant, 5/6 functionalities were less than 5cm, and 6/8 were non-functional with >5cm. CT density and MRI signal intensity did not play a role in differentiating benign from malignant lesions, but clear cystic lesions were more common (4/5 cases), and 4/4 cases were clearly malignant. Conclusion: CT and MRI manifestations of retroperitoneal paraganglioma are diverse. Their size, cystic degeneration, and invasion are helpful in differentiating between benign and malignant lesions.