目的分析肾上腺少见肿瘤的 CT、MRI表现特点，提高其CT、MRI诊断 准确性。方法 回顾性分析27例经手术病 理证实为肾上腺少见肿瘤患者的临床、 CT和MRI资料，总结肾上腺少见肿瘤的 CT、MRI表现特点。结果 本组27例， 肾上腺髓质脂肪瘤10例，内皮性囊肿5 例，囊性淋巴管瘤、脂肪瘤、节细胞神 经瘤、皮质腺癌各2例，畸胎瘤、神经纤 维瘤、神经母细胞瘤、淋巴瘤各1例。肾 上腺少见肿瘤的大小、形态、密度或信 号、强化程度和方式等各不相同。结论 肾上腺少见肿瘤的CT、MRI表现具有一定 的特点，认识其特征性表现，有助于提 高CT、MRI诊断的准确性。

Objective To evaluate the CT and MRI features of rare adrenal neoplasms and to improve the diagnostic ability performance. Methods Clinical, CT and MRI materials were retrospectively reviewed in 27 patients with rare adrenal neoplasms proved by surgical pathology. CT scan was performed in 22 cases, and CT enhancement scan was performed in 17 cases; MRI plain and enhancement scan was completed in 3 cases; CT and MRI scans were performed in 2 cases. Results There were myelolipoma in 10 cases, endothelial cysts in 5 cases. Cystic adrenal lymphangioma, lipoma, ganglioneuroma, and adenocarcinoma had 2 cases for each; Teratoma, neurofibroma, neuroblastoma, and lymphoma had 1 case for each. The CT and MRI characteristics (such as size, shape, density or signal, and enhancement feature) of rare adrenal neoplasms can discriminate rare adrenal neoplasms. Conclusion CT and MRI findings of rare adrenal neoplasms showed certain characteristics, which were contributed to the diagnosis and differential diagnosis.