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How does a colonoscopy or a sigmoidoscopy help with diagnosing Crohn's disease?

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Colonoscopy and sigmoidoscopy allow the doctor to directly view the large intestine, which is the lower part of the digestive tract. These techniques can often provide the most accurate information about the intestines. They may be better at detecting small ulcers or inflammation than other techniques. They can be used to assess the severity of any inflammation. Colonoscopy is the most important tool in diagnosing Crohn's disease.

From: Diagnosing Crohn's Disease WebMD Medical Reference

SOURCES:

National Digestive Diseases Information Clearinghouse: "Crohn's Disease."

WebMD Medical Reference: "Diagnosing Crohn's Disease."

American College of Gastroenterology: "Inflammatory Bowel Disease."

Reuters Health: "Capsule endoscopy may miss post-op recurrence of Crohn's disease."

Reviewed by Minesh Khatri on June 14, 2018

SOURCES:

National Digestive Diseases Information Clearinghouse: "Crohn's Disease."

WebMD Medical Reference: "Diagnosing Crohn's Disease."

American College of Gastroenterology: "Inflammatory Bowel Disease."

Reuters Health: "Capsule endoscopy may miss post-op recurrence of Crohn's disease."

Reviewed by Minesh Khatri on June 14, 2018

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What happens during a colonoscopy or a sigmoidoscopy for Crohn's disease?

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