Coronal STIR image showing a fistulous track, in the right peri-anal region. External opening is in the right perianal region, with track coursing inferiorly. Track is seen traversing along the outer aspect of the external anal sphincter on right side.
Superiorly the track is seen entering through the external anal sphincter.
Axial STIR images demonstrating the fistula coursing through the external anal sphincter.
The internal opening of the fistula was seen in the posterior midline (6'o clock) position.
According to the St.James University Hospital Classification this is classified as a Grade 3 Or Trans-sphincteric fistula. There was no abscess formation of secondary tracking into the ischio-rectal fossa. No supralevator extension was seen.
No comments:
Post a Comment