Result Analysis Of Colonoscopy In 7298 Cases

ObjectiveTo analyze the detection rate of diseases such as colorectal cancer, colorectal polyps, ulcerative colitis, ischemic colitis, melanosis coli in different age groups, and to study the detection rate of different predilection sites and pathological types of colorectal cancer, colorectal polyps. With a view to make the physician get messages of detection rate of various diseases, and to guide clinical diagnosis.MethodFirstly, This study analyze the detection rate of diseases such as colorectal cancer, colorectal polyps, ulcerative colitis, ischemic colitis, melanosis coli in different age groups (youth 18-45 years old, middle age 46-60 years of age, old age≥61 years). Secondly, we study the detection rate, predilection sites and pathological types of colorectal cancer, colorectal polyps, and the corresponding relationship between them.Results1. The detection rate of men was higher than that of women in colon cancer, rectal cancer, colon polyps and rectal polyps. And in pseudo membranous colitis, ischemic colitis, melanosis coli, non-specific colitis and other diseases, the detection rate of women was higher than that of men.1.1 The detection rate of colon cancer in the elderly group was higher than youth and middle age group (P<0.01). The detection rate of rectal cancer in middle and old age group was higher than the youth (P<0.01).1.2 The detection rate of colon polyps and rectal polyps in middle and old age group was higher than the youth (P<0.01).1.3 The detection rate of ulcerative colitis in youth group was higher than middle and old age group (P<0.01).1.4 The detection rate of ischemic colitis and melanosis coli in old age group was higher than youth and middle age group (P<0.05).2 colorectal cancer and colorectal polyps2.1 predilection sites of colorectal cancer and colorectal polypsPredilection sites of colorectal cancer and colorectal polyps is left colon, the first is rectum, followed by the sigmoid colon (P<0.05). The predilection sites of different age groups were similar.2.2 pathological types of colorectal cancer and colorectal polypsThe main pathological type of colorectal cancer was adenocarcinoma, this data include 202 cases adenocarcinoma, only one case of squamous cell carcinoma,2 cases of carcinoid tumor. The main pathologic types of colorectal polyps were adenoma and inflammatory polyps. The detection rate of inflammatory polyps decreased with the age (P<0.05), while the detection rate of adenoma increased with age (P<0.05).2.3 The corresponding relationship between the pathological types and predilection sitesThe predilection site of inflammatory polyps was rectum, followed by sigmoid colon, transverse colon; The predilection site of adenoma was sigmoid colon, followed by the rectum, transverse colon; The predilection site of hyperplastic polyps was rectum, followed by sigmoid colon, transverse colon (P<0.01).Conclusion 1. The detection rate of colon cancer, rectal cancer, colon polyps and rectal polyps increased with age, and the male was higher than that of women.2. In ulcerative colitis, the detection rate of young people is significantly higher than the middle and old age group.3. In ischemic colitis and melanosis coli, the detection rate increased with age, and the detection rate of women was higher than men.4. The predilection site of colorectal cancer was left colon, the main pathological type of colorectal cancer was adenocarcinoma.5. The predilection site of colorectal polyps was left colon. The main pathologic types of colorectal polyps were adenoma and inflammatory polyps.