59 year old male with a history of Crohn's disease, ileitis presents with perianal pain. Assess for perianal fistula. PELVIS:PROSTATE/SEMINAL VESICLES: No significant abnormality noted.BLADDER: No significant abnormality noted.BOWEL, MESENTERY: Again seen is a transsphincteric perianal fistula tract extending from the 1 o'clock position to the level of the subcutaneous tissue along the left gluteal crease, tract is less prominent when compared to the prior examination. Tract terminates in a small elongated focus of increased signal abnormality measuring 11 x 6 mm, measuring slightly smaller than on earlier exam. Again seen is a smaller tract extending from the 7 o'clock position to the midline without focal fluid collection to suggest abscess formation. The previously described perianal fistula originating from the 2 o'clock position is also less prominent when compared to the prior examination.Complex fistula formation seen in right lower quadrant on earlier exam not included on current study.BONES, SOFT TISSUES: No significant abnormality noted.
Persistent perianal fistulae, less pronounced when compared to the prior examination.