1临床资料患者,男,82岁,以“肺癌7年,痰中带血6个月、出现呼吸困难3个月”为主诉入院。患者7年前体检时确诊为肺癌,组织病理学检查为鳞癌,实施化疗及放疗,并定期复查肺部CT,未发现病灶明显变化。入院前6个月,无明确诱因咯白痰,痰中带鲜红色血丝;入院前3个月,自觉痰中含血量增多 1 clinical data of patients, male, 82 years old, with “lung cancer for 7 years, bloody sputum 6 months, breathing difficulties occurred 3 months” as the main complaint. 7 years ago, the patient was diagnosed with lung cancer at the time of examination, histopathological examination was squamous cell carcinoma, chemotherapy and radiotherapy were performed, and lung CT was regularly reviewed. No significant changes were found in the lesions. 6 months before admission, there is no clear incentive to slightly white sputum, sputum with bright red bloodshot; 3 months before admission, consciously increased blood volume in sputum