colorectum

noun

co·​lo·​rec·​tum ˌkō-lə-ˈrek-təm, ˌkäl-ə- 

plural colorectums or colorecta -tə 

: the colon and the rectum

Similar risks across time intervals were observed among participants with a history of adenoma in the proximal colon or distal colorectum.

—Reiko Nishihara et al., The New England Journal of Medicine