Showing papers on "Relative survival published in 1970"

Survivorship following treatment for cancer of the colon and rectum

Abstract: Three hundred seventy cases of cancer of the colon and rectum admitted to the Victoria General Hospital in Halifax, Nova Scotia, were analyzed with particular attention to their survivorship by sex, stage, site, and duration. The overall survival rate was 33% and was similar for males and females. The age and sex standardized survival rates (relative survival ratios) were similar for all sites except the rectum which had a particularly poor prognosis. There was no consistent relationship between duration of symptoms and stage, but there was a clear relationship between stage and survivorship. After 2 years, the relative survival ratios for Stage A became stable at around 80-85%, while for Stages B, Cl, and C2 the ratios continued to decline over 5 years. However, cases with symptoms of less than 4 months had only a slightly better survival experience than those with symptoms of longer duration. These results suggest that so-called “early” lesions have a better prognosis, not because of their short duration, but because of either a strong host resistance or the inherently low malignant potential of the cancer.