An Unusual Perineal Swelling: A Cyst Between the Sphincters

Abstract

Epidermal cysts are very common lesions. Here we present the unusual case of an epidermal cyst occurring between the anal sphincters, presenting as a lump in the perineum. This was successfully excised with careful dissection of the intersphincteric plane. To our knowledge this is the only case of its kind reported in the literature.

Keywords

• epidermal
• cyst
• anus
• sphincter