1　临床资料1.1　一般情况　临床确诊肺癌65例,男35例,女30例;年龄23～79岁,平均51岁。其中吸烟者26例,吸烟史5～30年,≥30年者16例。发病过程均有咳嗽、咳血、气短、呼吸困难、声嘶、发热、消瘦、乏力等。伴有陈旧性肺结核2例。家族史中有恶性肿瘤者4例。1.2　CT表现　肿瘤多 1 Clinical data 1.1 General conditions Clinically diagnosed 65 cases of lung cancer, 35 males and 30 females; aged 23 to 79 years, mean 51 years old. Among them, 26 were smokers, 5 to 30 years of smoking history, and 16 patients≥30 years. The disease process has cough, hemoptysis, shortness of breath, difficulty breathing, hoarseness, fever, weight loss, fatigue and so on. Accompanied by old tuberculosis in 2 cases. There were 4 cases of malignant tumors in family history. 1.2 CT manifestations