Is ulcerative colitis associated with survival among older persons with colorectal cancer in the US? A population-based case-control study.

Background: While ulcerative colitis (UC) is a risk factor for colorectal cancer, the association of UC with survival after colorectal cancer has not been studied in an older population.

Aims: The objective of our study was to compare the survival of colorectal cancer between persons with and without UC.

Methods: All cases of colorectal cancer (CRC) in persons 67 and older residing in a SEER catchment area and enrolled in the Medicare between 1993 and 1999 were assessed.

Is inflammatory bowel disease an important risk factor among older persons with colorectal cancer in the United States? A population-based case-control study.

Background: While ulcerative colitis (UC) and Crohn's disease (CD) are thought to predispose to colorectal cancer (CRC), the association has not been well studied in an older population.

Aims: The objective of our study was to evaluate the association of ulcerative colitis and Crohn's disease and colorectal cancer in a population-based, case-control study. We also wished to estimate the incidence rates of colorectal cancer among older individuals with UC/CD.