A CASE OF ISCHIORECTAL FISTULA WITH THE SECONDARY OPENING AT THE ABDOMINAL WALL

This paper deals with a case or ischiorectal fistula with the secondary opening at the abdominal wall, which is extremely rare. The patient was an 82-year-old man complaining of high fever who noticed purulent discharge from the abdominal wall. Based on preoperative examinations including MRI,we diagnosed the case as ischiorectal fistula which originated from the ischiorectal fossa,passed through the peritoneal subcutaneous structure, and then formed the secondary opening at the abdominal wall. Abdominal MRI was very helpful to diagnose the course of the anal fistula. Even in such a case of ischiorectal fistula as it follows uncommon run like ours,MRI appears to be helpful to select the most appropriate therapy.