Fast Five Quiz: Anal Fissures and Fistulas

In patients with anal fissures that are irregular and/or off the midline, or in whom an underlying illness is present (eg, squamous cell cancer, Crohn's disease, AIDS), appropriate lab tests should be obtained. These can include:

• Erythrocyte sedimentation rate

• Biopsy of fissure or lesions (as warranted)

• Stool and viral cultures

• HIV testing

When ordinary anal fissures are located on the anterior or posterior midline, no laboratory tests are necessary.

Learn more about the workup of anal fissure.

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Cite this: Richard H. Sinert. Fast Five Quiz: Anal Fissures and Fistulas - Medscape - Sep 15, 2022.