目的 探讨眼眶内少见肿瘤的CT及MR表现特点，提高影像诊断符合率。方法 回顾性分析经组织学病理、免疫组化证 实的20例眼眶少见肿瘤的影像资料并复习相关文献。结果 其中淋巴瘤10例，神经纤维瘤6例，孤立性纤维瘤1例， 横纹肌肉瘤1例、错构瘤1例、恶性黑色素瘤1例，从密度、信号、形态、边界、生长方式、强化程度及方式、临床 特征判断，不同肿瘤有其不同特点。结论 对眼眶内少见肿瘤的诊断，CT及MR检查有重要价值。

Objective To investigate the CT and MR features of rare tumors in orbit, and to improve the coincidence rate of imaging diagnosis. Methods The imaging data of 20 cases of rare orbital tumors confirmed by histopathology and immunohistochemistry were retrospectively analyzed and reviewed. Results The lymphoma (n = 10), 6 cases of neurofibroma, 1 cases of solitary fibrous tumor, rhabdomyosarcoma in 1 case, 1 case of hamartoma, malignant melanoma in 1 case and from the density, shape, boundary, growth pattern, strengthen the degree and manner, clinical characteristic, different tumors have different characteristics. Conclusion CT and MR examinations for the diagnosis of rare orbital tumors are of important value.