ABSTRACT
If the theory that both the abscess and the fistula-in-ano have a common cause is accepted, the two conditions can be considered simultaneously. Indeed, the term ‘‘fistulous abscess’’ has been used to describe this problem. The abscess is an acute manifestation, and the fistula is a chronic condition. A fistula is an abnormal communication between any two epithelial-lined surfaces. A fistula-in-ano is an abnormal communication between the anal canal and the perineal skin. Many of these fistulas are easily recognized and readily treated, but others can be very complex and correspondingly difficult to manage.
