59-year-old female with history of perianal fistula status post seton placement. Evaluate for residual collection. 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: 2.2 x 1.7 cm rim-enhancing, air/fluid-containing perirectal collection/abscess at the posterior 6 o'clock position (series 7/35). This collection/abscess extends inferiorly into a small transsphincteric fistula with seton in place in the right medial gluteal cleft.Abnormal osseous signal of the visualized bones diffusely, most suggestive of underlying tumor and/or post therapy changes.OTHER: Small right scrotal hydrocele, partially visualized.
Perirectal collection/abscess with right transsphincteric fistula that has a seton in place.