XXXX and rectum: 30-year follow-up study.

@entity1 @entity3329 @entity5 @entity188 @entity694 @entity204
This study reviews the course of all @entity1 registered at the Saskatoon Cancer Clinic between 1949 and 1951, with histologically proven @entity694 . The data were abstracted, coded and analysed by life-table methods. Follow-up was complete to @entity204 or to 1982. There were 403 @entity1 (58.3% were @entity1 ). @entity188 accounted for 51% of the total, the sigmoid colon 22% and the cecum 10%. The primary @entity5 was resected by abdominoperineal resection, hemicolectomy or segmental colectomy in 63% of the @entity1 ; colostomy alone was performed in 21%. The overall survival was 31% at 5 years, 24% at 10 years, 15% at 20 years and 7% at 30 years from diagnosis. Many of the deaths in this relatively elderly group of @entity1 were due to causes other than the @entity5 . Considering @entity5 -related causes of @entity204 only in @entity1 with resectable lesions, the cumulative probability of survival at 5, 10, 20 and 30 years was 63% +/- 4%, 54% +/- 4%, 48% +/- 4% and 47% +/- 6%, respectively (probability +/- 1 standard error), for those without @entity3329 , and 14% +/- 3%, 12% +/- 2%, 10% +/- 2% and 9% +/- 3%, respectively, for those with involved nodes. Death from the @entity5 was rare after 10 years while deaths from competing causes continued to occur, at a near constant rate, for 30 years. The data suggest that the @entity5 was eradicated in one third of all @entity1 , and in one half of @entity1 in subgroups with no @entity3329 or with shallow primary lesions.
