The Clinical Characteristics and Incidence Tendency Analysis on 1628 Cases of Colorectal Carcinoma

Objective To provide the basis for clinical diagnosis and treatments of colorectal cancer by studying the clinical characteristics and incidence tendency of colorectal cancer in recent 12 years in Kunming.Methods The data of 1628 colorectal cancer patients from 2001 to 2012 in the First Affiliated Hospital of Kunming Medical University were collected. The clinic pathological data of all patients was divided into 2001-2006(Agroup)and 2007-2012(B group) two consecutive time periods for statistical analysis according to its time of onset.Results The incidence of colorectal cancer in the city rose from 49.2% to 56.0%, and the incidence of colorectal cancer in rural areas decreased from 50.8% to 44%(P 0.05).The location ratio of colorectal cancer in the rectum decreased from 74.8% to 73.9%, in the left half colon ratio increased from 14.8% to 19%,while the right colon ratio decreased from 10.4% to 7.1%(P 0.05). The change in the three parts had statistically significant difference between two consecutive time periods. The percentage of colorectal cancer patients in Dukes A stage rose from 13.4% to 18.8%,while the percentage of patients in Dukes D stage decreased from 22.3% to 14.5%(P 0.01). Conclusions The incidence of colorectal cancer in Kunming gradually increases.The morbidity in the city is significantly higher than that in the country. The ratio of left half colon cancer is rising,but the ratio of rectal cancer and right half colon cancer is falling. The early diagnosis rate of colorectal cancer is on the rise.