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We sought to determine the long-term risk of cardiovascular disease (CVD)—stroke and myocardial infarction—and congestive heart failure (CHF) in older patients with colorectal cancer, as well as to understand the roles that preexisting comorbidities and cancer therapy play in increasing this risk.

We evaluated individuals from the SEER-Medicare database with incident stage I to III colorectal cancer at age older than 65 years between January 1, 2000, and December 31, 2011 (n = 72,408) and compared these patients with a matched cohort of Medicare patients without cancer (n = 72,408).

Median age at diagnosis of colorectal cancer was 78 years (range, 66 years to 106 years), and median follow-up was 8 years since diagnosis. The 10-year cumulative incidence of new-onset CVD and CHF were 57.4% and 54.5% compared with 22% and 18% for control, respectively (P < …