肺癌是我国发病率居于前列的恶性肿瘤 ,预后差 ,容易发生远处转移 ,但转移到消化道较少见 ,尤以转移到结肠更为罕见。我院大肠癌外科发现左肺癌合并右半结肠转移 1例 ,现报告如下。1　病例资料　　病人 ,男 ,41岁 ,因咳嗽 ,胸痛 ,气急 5个月余入院 ,胸片示“左肺中央型癌 ,伴左 Lung cancer is a malignant tumor with the highest incidence in China. The prognosis is poor and distant metastasis is prone to occur. However, metastasis to the digestive tract is less common, especially to the colon. Our hospital’s colorectal cancer surgery found left lung cancer with right colon metastasis in 1 case, the report is as follows. 1 Case information Patient, male, 41 years old, because of cough, chest pain, shortness of breath admitted to hospital for more than 5 months, chest X-ray showed "left lung central cancer, with left