Left-sided trans-sphincteric active fistulous tract is seen, showing mucosal anal opening at 2 O'clock position, located 1 cm from the anal verge.
Course: Trans-sphincteric to the low ischioanal fat on the left. Cutaneous opening on the left side of the natal cleft. No side branches or abscesses. Intact levator ani, with no supralevator collections identified.