History of perianal abscess now with worsening pain and urinary obstruction. PELVIS:PROSTATE/SEMINAL VESICLES: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Redemonstration of a small rim-enhancing fluid collection posterior to the anal sphincter which measures 1.8 x 1.1 cm (series 6 image 168), previously 1.5 x 1.0 cm. There is surrounding soft tissue edema and thickening of the adjacent rectal wall compatible with prior. No associated fistula is evident. BONES, SOFT TISSUES: Presacral soft tissue edema.OTHER: No significant abnormality noted.
1.Interval increase in size of perianal abscess with increasing adjacent soft tissue edema/proctitis.