Abstract
An anal fissure is a painful tear of the sensitive anoderm, distally from the dentate line. It is a prevalent disorder and impairs quality of life dramatically. Typical or primary fissures are associated with constipation and mostly located at the posterior midline. About 1% of fissures are atypical in appearance and are generally secondary in nature. These secondary fissures should arouse attention and require further exploration for underlying conditions, such as Crohn’s disease, malignancy, trauma or venereal infections. The aim of this manuscript is to provide a comprehensive review on the clinical aspects, evaluation and treatment of secondary anal fissures.
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