从事医疗护理、医学教学、医学研究、卫生医疗人员培训、卫生技术人员继续教育、保健与健康教育。
Objective To investigate the causes of lower alimentary tract hemorrhage in various age groups.Methods The clients principally present hematochezia,including 175 cases whose age exceed 60 years old(older age group) and 225 cases whose age exceed 18 years but less than 59 years old(middle-young people group),adopt electronic colonoscopy.Results The most common causes resulted in lower alimentary tract hemorrhage in old people were four disease,as follow: carcinoma of large intestine(56 cases,14.0%),large intestinal polyp(32 cases 8.0%),piles(23 cases,5.75%),ulcerative colitis(16 cases,4.0%).The diseases resulted in hematochezia in middle-young people were ulcerative colitis(45 cases,11.3%),colorectal polyp(37 cases,9.25%),primary colitis(35 cases,8.75%) and piles(30 cases,7.5%).The most involved regions were colon sigmoideum and rectum.Conclusions Cancer of colon,colorectal polyp,ulcerative colitis and piles were common causes of lower alimentary tract hemorrhage in old,middle and young people.Cancer of colon was the first cause in old people;however,ulcerative colitis was the first cause in middle-young people.Therefore,digital rectal examination and colonoscopy play important roles in the diagnosis of lower alimentary tract hemorrhage.
