关键词: 肠癌, 吸烟, 部位, 男性

Abstract: ［Abstract］ Objective To investigate the association between smoking and lesion sites of colorectal cancer in male patients. Methods Clinical data of male patients with colorectal cancer who were admitted into our hospital from 2010 to 2016 were collected and retrospectively analyzed. Patients were divided into smoking group and non?smoking group. Results There were significant differences in the age composition ratio between left?and right?sided colon cancer smoking and non?smoking group（P<0.05）. More patients with left?sided colon cancer in non?smoking group suffered from hematochezia（35.4%）, while abdominal pain seems more common in the smoking group（33.0%）（P<0.05）. The proportion of patients with high differentiation adenocarcinoma in smoking group was higher than that in non?smoking group（P<0.05）；when it comes to the smoking index, the proportion of heavy smokers in rectal cancer were higher than the right?and left?sided colon cancer patients （P<0.05）. Conclusion Smoking and location are independent factors for colorectal cancer, different parts of colorectal cancer between smoking and non?smoking groups have differences in the diagnosis of sensitivity, clinical pathology and prognosis.

Key words: male, colorectal cancer, location, smoking