Anal canal diverticulum

Last revised by Daniel J Bell on 13 Dec 2021

Diverticula of the anal canal are very rare with only a few cases reported in the global literature.

Clinical presentation

Patients have presented with anorectal bleeding and/or pain.

Radiographic features

The few cases have either not been characterized on imaging or only imaged on barium studies.

Differential diagnosis

Differential diagnosis is limited, but the more common perianal fistula and/or abscess needs to be considered.

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