31-year-old man with history of Crohn's disease, perirectal abscess. PELVIS:PROSTATE/SEMINAL VESICLES: The prostate and seminal vesicles appear normal.BLADDER: Bladder appears normal.LYMPH NODES: No significant lymphadenopathy noted.BOWEL, MESENTERY: Partially visualized small bowel appears normal. There are no perirectal collections suspicious for abscess.Two T2 hyperintense linear tracks are identified. The first (401/9-24) extends from the images at the 12:00 position to the right medial gluteal cleft traversing the internal and external sphincter complex. The second (401/14) is more medial and extends from the 9:00 position of the anal verge to the right medial gluteal cleft remaining medial to the external sphincter complex.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
1.Transsphincteric perianal fistula to the right gluteal cleft.2.Intersphincteric perianal fistula to the right gluteal cleft.3.No evidence of abscess.