An anal fissure is a traumatically induced longitudinal split in the squamous epithelium
of the distal anal canal. It typically extends from the anal verge cephalad towards
the dentate line. It most commonly occurs in the midline posteriorly, but it can also
occur in the midline anteriorly. Anterior fissures are more common in women than men,
occurring in 10% of women with fissures compared with 1% of men with fissures [
[1]
]. In its chronic form it is sometimes called ulcer-in-ano.To read this article in full you will need to make a payment
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© 2002 Elsevier Science (USA). Published by Elsevier Inc. All rights reserved.
