23-year-old male. Perianal Crohn's disease with Seton in place. Evaluate for perianal abscess. PELVIS:PROSTATE/SEMINAL VESICLES: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: Left perianal transsphincteric fistula originating at the 3 o'clock position of the anus and extending inferiorly to bifurcate into two tracts within the subcutaneous tissues of the left inner buttock with drainage at the skin surface. Setons are noted in the fistula tracts. No abscess collection is identified.OTHER: No significant abnormality noted.
Left perianal fistula originating at the 3 o'clock position without evidence of an abscess.