in a case-control study of cholecystectomy and carcinoma of the colon conducted in a residential retirement community near los angeles , california , no significant association was found , either for all colonic cancer ( relative risk = 1.2 ) or by subsite ( relative risk = 0.8 for right-sided colonic cancer and 1.3 for other colonic cancer ) .
C0699790
carcinoma of the colon
C0009368
colonic