Department of Public Health Sciences

Cancer of the colon and rectum in California: Anatomic site and stage at diagnosis by gender and race/ethnicity

Cress RD, Davidson-Sawyer K

Journal of Registry Management . 1997. 24(4):120-4.

We analyzed 88,994 cases from the California Cancer Registry diagnosed with invasive cancer of the colon and rectum between 1988 and 1994. There was a statistically significant decrease in incidence of about 3% per year and in mortaliy of about 4% per year, but only among non-Hispanic white men and women. Fifty-eight percent of men and 50% of women had tumors located in the distal portion of the large intestine (sigmoid colon, rectosigmoid junction, and rectum). Asian and Hispanic men and women had a higher proportion of tumors that occured in the distal portion that did not-Hispanic white men and women. The proportion of cases diagnosed with localized cancer was slighly lower among blacks, Asians and Hispanics than among non-Hispanic whites, but the marjority of cancers in all groups were diagnosed after they had spread to a regional or remote site. The proportion of cancers diagnosed at a localized stage did not increase during the period of the study. There is a clear need for increased screening and early detection to improve survival.

Keywords: colorectal neoplasms, survival analysis, staging, survival rate, ethnic groups

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