论文部分内容阅读
近10年来,全球范围内结肠直肠癌发病人数持续增多,在男性癌症病人中发病率排名第三,在女性癌症病人中排名第二,平均每年有694 000人因结肠直肠肿瘤而死亡[1]。由于结肠癌与直肠癌的生物学特性、诊治方法存在差异,两者的预后并不相同。过去,直肠癌病人即使经过有效的手术治疗,也容易局部复发,5年生存率较结肠癌病人低5%~10%,预后较差[2]。近期资料显示,在过去数十年中,医师针对直肠
In the past 10 years, the number of colorectal cancer patients in the world has continuously increased, ranking the third in the incidence of male cancer patients and second in female cancer patients, with an average of 694,000 deaths each year due to colorectal tumors [1] . Due to the biological characteristics of colon cancer and rectal cancer, diagnosis and treatment methods are different, the prognosis of the two are not the same. In the past, patients with rectal cancer were prone to local recurrence even after effective surgical treatment. The 5-year survival rate was 5% -10% lower than that of patients with colon cancer and the prognosis was poor [2]. Recent data show that for the past decades physicians target the rectum