Cholecystectomy and colorectal cancer
Abstract

: A population-based cohort consisting of 62,615 patients who underwent Cholecystectomy was followed up for the occurrence of colorectal cancer up to 23 years.
: There were 633 colorectal cancers versus 637.9 expected (standardized incidence ratio [SIR] = 0.99; 95% confidence interval [CI] = 0.92-1.07). Analyses of an extensive number of subgroups including sex, age at operation, duration of follow-up, underlying diagnosis, type of operation, and different cancer sites did not show any association. However, for cancer of the right colon among women, the risk was increased (SIR = 1.24; 95% CI = 1.03-1.48) most prominent 15 years or more after operation (SIR = 1.54; 95% CI = 1.03-2.22).
: Overall, there is no excess risk of colorectal cancer following Cholecystectomy, but consistent with some earlier reports, we observed an increased risk among women for right-sided colon cancer 15 years or more after operation
