Older adults who were prescribed a daily aspirin were less likely to die than those who weren't.
Scientists say the results still need to be confirmed with more rigorous studies. But they add to the evidence linking aspirin use to longer survival for cancer patients.
Medical guidelines currently endorse the use of low-dose aspirin to prevent heart disease but not to fight or prevent cancer.
The study is published in the Journal of the American Geriatrics Society, and authors say anything that might improve survival in the elderly with colon cancer would be welcome since there is no consensus on whether to use chemotherapy.