1　病例报告患者,男性,57岁。1999年8月19日出现左胸部持续性隐痛伴咳嗽,咳白色粘液痰,偶见血丝。同年9月9日入院。体检:颈部、锁骨上及腋窝等处淋巴结无肿大。两肺呼吸音清晰,未闻及口罗音。胸部ＣＴ显示:左上肺可见一5ｃｍ×4ｃｍ的肿块影,略分叶,密度尚均匀,周边呈毛刺状,肿 1 case report patient, male, 57 years old. August 19, 1999 appeared left chest persistent dull pain with cough, cough white mucus sputum, occasionally bloodshot. September 9 the same year admitted to hospital. Physical examination: neck, supraclavicular and axillary lymph nodes without swelling. Breath sounds clear both lungs, no smell and mouth rales. Chest CT showed: the left upper lung visible a 5cm × 4cm mass shadow, slightly divided leaves, the density is still uniform, the surrounding burr-like, swollen