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Hyperintense fistulous tract extends in the left ischioanal & ischiorectal fossa for about 7 cm, it traverses the external anal sphincter opposite 3 O'clock arching over the puborectalis and below the levator ani muscle, to end in a horseshoe posterior intersphincteric collection measuring 3.0 cm, no side branches noted.
Opinion:
High trans-sphincteric fistula with horseshoe intersphincteric abscess.