OBJECTIVE: The purpose of this study was to identify the clinical factors and tumor characteristics that predict the outcome of colorectal cancer patients aged >80 years. MATERIALS AND METHODS: The data of 186 patients aged >80 years with colorectal cancer were collected from a computer database, and the variables were analyzed by both uni- and multivariate analyses. RESULTS: The 30-day mortality was 4% and the 90-day mortality 10%. The 1-year survival was 76%, and 27 (61%) of the 44 deaths were unrelated to cancer. The overall 5-year survival was 36%, the median survival 38 months, and the cancer-specific survival 40%. The recurrence rate after radical surgery was 22% and it was not affected by age. Kaplan-Meier estimates indicated that age, number of underlying diseases, radical operation, Union for International Cancer Control stage of the tumor, tumor size, number of lymph nodes involved, venous invasion, and recurrent disease were significant predictors of survival, but in the Cox regression model, only radical operation and venous invasion were independent prognostic factors for survival. CONCLUSIONS: After good surgical selection, low early mortality and acceptable long-term survival can be achieved even in the oldest old patients with colorectal cancer. However, low early mortality seems to underestimate the effects of surgery during the first postoperative year.
OBJECTIVE: The purpose of this study was to identify the clinical factors and tumor characteristics that predict the outcome of colorectal cancerpatients aged >80 years. MATERIALS AND METHODS: The data of 186 patients aged >80 years with colorectal cancer were collected from a computer database, and the variables were analyzed by both uni- and multivariate analyses. RESULTS: The 30-day mortality was 4% and the 90-day mortality 10%. The 1-year survival was 76%, and 27 (61%) of the 44 deaths were unrelated to cancer. The overall 5-year survival was 36%, the median survival 38 months, and the cancer-specific survival 40%. The recurrence rate after radical surgery was 22% and it was not affected by age. Kaplan-Meier estimates indicated that age, number of underlying diseases, radical operation, Union for International Cancer Control stage of the tumor, tumor size, number of lymph nodes involved, venous invasion, and recurrent disease were significant predictors of survival, but in the Cox regression model, only radical operation and venous invasion were independent prognostic factors for survival. CONCLUSIONS: After good surgical selection, low early mortality and acceptable long-term survival can be achieved even in the oldest old patients with colorectal cancer. However, low early mortality seems to underestimate the effects of surgery during the first postoperative year.
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