流行病学研究发现,饮食因素和前列腺癌间存在一定相关性,为此,进行病例-对照研究以了解饮食因素及肥胖与前列腺癌之间可能存在的相关性。收集90例男性患者,年龄50～88岁,均经组织学确诊前列腺癌。另集180例其它泌尿系疾病或泌尿系原发性肿瘤患者为对照。将摄食内容分5类:正常饮食,富动物脂肪饮食,富植物脂肪饮食,乏维生素A饮食和乏维生素C Epidemiological studies have found that there is a certain correlation between dietary factors and prostate cancer. For this reason, a case-control study was conducted to understand dietary factors and the possible correlation between obesity and prostate cancer. A total of 90 male patients aged 50 to 88 years were recruited and histologically diagnosed with prostate cancer. Another set of 180 patients with other urinary diseases or urinary primary tumors served as controls. The food intake will be divided into 5 categories: normal diet, rich animal fat diet, rich vegetable fat diet, lack of vitamin A diet and lack of vitamin C