目的：回顾性分析肺淋巴瘤的ＣＴ与Ｘ线表现，以提高对肺淋巴瘤影像学表现的认识。材料与方法：２１例肺淋巴瘤均经肺或浅表淋巴结穿刺活检或手术证实。常规及薄层ＣＴ扫描并摄胸部Ｘ线正侧位片作对照检查。结果：肺淋巴瘤的影像异常可分为：肿块结节型、实变型、肺炎肺泡型、支气管血管淋巴管型、血行播散型、心包及胸膜病变型。绝大多数病例有两种或两种以上上述类型的影像表现，同时伴有纵隔肺门的淋巴结肿大。ＣＴ对其特征性表现的显示率明显高于Ｘ线，尤以薄层ＣＴ更佳。结论：多发结节伴支气管充气征和支气管周围多发小结节勾画出支气管气像是肺淋巴瘤的特征性表现；多种表现的同时出现是肺淋巴瘤的又一特点。ＣＴ检查较Ｘ线灵敏，可准确显示肺内肺外情况，有助于诊断及分期 Objective: To retrospectively analyze the CT and X-ray findings of pulmonary lymphoma in order to improve the understanding of the imaging manifestations of lung lymphoma. Materials and Methods: Twenty-one cases of pulmonary lymphoma were confirmed by lung or superficial lymph node biopsy or surgery. Conventional and thin-slice CT scans were performed and chest X-ray radiographs were taken for comparison. RESULTS: Imaging abnormalities of pulmonary lymphoma can be divided into mass nodules, consolidation, pneumonia alveolar, bronchovascular lymphatics, hematogenous disseminated, pericardial and pleural lesions. The vast majority of cases have two or more of the above types of imaging manifestations, accompanied by enlargement of the lymph nodes of the mediastinal hilum. The display rate of characteristic features of CT is significantly higher than that of X-ray, especially in thin-slice CT. Conclusion: Multiple nodules with bronchial bronchograms and multiple nodules around the bronchus delineate bronchiogastric features as characteristic features of lung lymphoma; multiple manifestations of simultaneous presentation are another feature of pulmonary lymphoma. CT examination is more sensitive than X-ray and can accurately display extrapulmonary conditions in the lung, which is helpful for diagnosis and staging