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What tests might be needed to diagnose an anal fissure?

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Generally, a visual exam of the area is all it takes. But if your doctor thinks an inflammatory bowel disease has led to the anal fissure, you might need tests. That might include one called a sigmoidoscopy to see the lower part of the colon, or the sigmoid colon. Or you may need a colonoscopy to look at the whole large intestine. Both involve inserting a long, thin, flexible, lighted tube into your anus to view the colon. They're used to look for abnormal growths or inflammatory conditions.

From: How Anal Fissures Are Diagnosed WebMD Medical Reference

SOURCES:

American Society of Colon & Rectal Surgeons: "Anal Fissure."

Cleveland Clinic: "Anal Fissures."

UpToDate: "Patient information: Anal fissure (Beyond the Basics)."

National Digestive Diseases Information Clearinghouse (NDDIC): "Flexible Sigmoidoscopy," "Colonoscopy."

Reviewed by Carol DerSarkissian on October 28, 2018

SOURCES:

American Society of Colon & Rectal Surgeons: "Anal Fissure."

Cleveland Clinic: "Anal Fissures."

UpToDate: "Patient information: Anal fissure (Beyond the Basics)."

National Digestive Diseases Information Clearinghouse (NDDIC): "Flexible Sigmoidoscopy," "Colonoscopy."

Reviewed by Carol DerSarkissian on October 28, 2018

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