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What does a colonoscopy check for?

ANSWER

A colonoscopy is a screening test for colorectal cancer. This is a cancer that starts in the colon or the rectum. Both are a part of the large intestine.

SOURCES:

National Cancer Institute: "Colorectal Cancer -- Patient Version." American Cancer Society: "Colorectal Facts & Figures," "What is Colorectal Cancer?" American College of Gastroenterology: "Colonoscopy FAQs."

Reviewed by Sabrina Felson on April 22, 2019

SOURCES:

National Cancer Institute: "Colorectal Cancer -- Patient Version." American Cancer Society: "Colorectal Facts & Figures," "What is Colorectal Cancer?" American College of Gastroenterology: "Colonoscopy FAQs."

Reviewed by Sabrina Felson on April 22, 2019

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How common is colorectal cancer in the United States?

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