NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,791 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

coloanal anastomosis
(KOH-loh-AY-nul uh-NAS-toh-MOH-sis)
A surgical procedure in which the colon is attached to the anus after the rectum has been removed. Also called coloanal pull-through.

EnlargeThree-panel drawing showing rectal cancer surgery with anastomosis; first panel shows area of rectum with cancer, middle panel shows cancer and nearby tissue removed, last panel shows the colon and anus joined.

Resection of the rectum with anastomosis. The rectum and part of the colon are removed, and then the colon and anus are joined