Perianal pain. 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: Within the right ischiorectal fossa there is a 2.5 x 1.6 cm collection which communicates with a fistula tract extending to the right dorsal paramedial gluteal fold (series 5 image 24 through 31). There appears to be a complex fistula originating at the 6 o'clock position of the anal canal extending inferiorly to the 12 o'clock position where it branches and proceeds dorsally to feed the fistula tract extending to the skin surface and slightly anteriorly and cranially to supply the fluid collection/abscess. OTHER: No significant abnormality noted.
Complex fistula tract believed to involve the 6 o'clock position of the anal canal extending towards the 12 o'clock position where it branches to supply a 2.5 cm fluid collection/abscess and a fistula tract extending to the right paramedial gluteal fold skin surface. 