NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,863 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.

A small, fingerlike pouch that sticks out from the cecum (the first part of the large intestine near the end of the small intestine).

EnlargeDrawing shows the stomach, small intestine, appendix, colon, and rectum.

The appendix is a small, fingerlike pouch that is attached to the end of the colon (large intestine).