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目的：探讨乳腺癌术后放疗患者放射性肺反应的影像学特点及其临床意义。材料和方法：１９９２年６月～１９９５年１月共收治６２例乳腺癌术后三野放疗病例，收集其各期胸片和ＣＴ资料，进行分析总结。结果：６２例中，７例发生早期放射性肺反应，６０例发生晚期放射性肺反应，其影像改变特点为放射性肺反应病灶不超出Ｘ线放疗野范围。结论：乳腺癌术后放疗患者，Ｘ线放疗野内的肺组织损伤不可避免，但由于肺受照射体积较小，所以对患者肺功能无明显影响。
Objective: To investigate the imaging features and clinical significance of radioactive lung reaction in postoperative radiotherapy for breast cancer. Materials and Methods: From June 1992 to January 1995, a total of 62 cases of breast cancer postoperative radiotherapy were treated. The chest radiographs and CT data of each stage were collected and analyzed. RESULTS: Of the 62 patients, 7 cases had early radiation pulmonary reaction, and 60 cases had late radiation pulmonary reaction. Their imaging changes were characterized by radioactive lung reaction lesions that did not exceed the X-ray radiotherapy field. Conclusion: In patients with postoperative radiotherapy for breast cancer, lung tissue damage in the radiotherapy field is unavoidable. However, due to the small volume of lung irradiation, there is no significant effect on lung function.