Fistula in ano as a rare complication of mediolateral episiotomy: report of three cases.

Fistula in ano has been reported as a rare complication of midline episiotomy. We report here 3 cases of fistula in ano complicating mediolateral episiotomy. One was suprasphincteric and 2 were transsphincteric. All patients had perineal pain and chronic suppuration. Before referral, 2 patients underwent incision and drainage alone. As a definitive procedure fistulotomy was performed, and long-term functional results have been satisfactory.