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Objective:The aim of the research was to study the clinical and epidemiological characteristics of incidence of colorectal cancer in North China. Methods: Analysis and summary were made for 704 colorectal cancer patients diagnosed from 2004 to 2008 in North China. Results: (1) Of 704 colorectal cancer patients,the median age was 56 years old,and the mean age was 58.2. There was no statistic difference in age between male and female cases,P > 0.05. (2) The male-female ratio was 1.62:1. (3) The proportion of rectal cancer was 62.92%,and incidence of the left colon cancer was higher than that of right colon cancer,P<0.05.(4) Of 712 lesions,658 cases were adenocarcinoma accounting for 92.4%,34 were malignant adenoma accounting for 4.8%,and 20 carcinoid accounting for 2.8%. (5) The 48.9% of patients belonged to stages 0 to IIB. Conclusion:The cases of colorectal cancer in North China is mainly rectal cancers,and the incidence of left colon cancer is higher than that of right colon cancer. The histopathological classification is mainly adenocarcinoma,and the ratio of early stage is high.
Objective: The aim of the research was to study the clinical and epidemiological characteristics of incidence of colorectal cancer in North China. Methods: Analysis and summary were made for 704 colorectal cancer patients diagnosed from 2004 to 2008 in North China. Results: (1) Of 704 colorectal cancer patients, the median age was 56 years old, and the mean age was 58.2. There was no statistic difference in age between male and female cases, P> 0.05. (2) The male-female ratio was 1.62: 1 . (3) The proportion of rectal cancer was 62.92%, and incidence of the left colon cancer was higher than that of colon cancer, P <0.05. (4) Of 712 lesions, 658 cases were adenocarcinoma accounting for 92.4%, 34 were 5. malignant adenoma accounting for 4.8%, and 20% accounting for 2.8%. (5) The 48.9% of patients belonged to stages 0 to IIB. Conclusion: The cases of colorectal cancer in North China are mainly rectal cancers, and the incidence of left colon cancer is higher than that of right colon cancer. T he histopathological classification is mainly adenocarcinoma, and the ratio of early stage is high.