Background and Objective: Incidence of colorectal cancer in China has increased since 1980s. The epidemiologic character of colorectal cancer in China is similar to that in high incidence districts. The distributions among different regions are different, with high incidence in the Eastern coastal regions and low incidence in the Western inland. This study was to explore the clinical characteristics of colorectal cancers in Heilongjiang province in 1981-2005. Methods: A total of 3607 patients with pathologi...