9-year-old male with history of rectal pain, perineal swelling, redness and induration. Evaluate for perianal abscess. BONE MARROW: No significant abnormality noted.SOFT TISSUES: In the superficial soft tissues adjacent to the left wall of the anus is an approximately 2.4 x 1.5 x 2 cm peripherally enhancing collection with restricted diffusion, consistent with abscess. Although the adjacent high T2 signal intensity indicates inflammation affecting the perianal musculature on the left, the abscess cavity appears to be inferior to these muscles within the subcutaneous fat. Given the amount of adjacent inflammation it is impossible to completely exclude fistulous connection with the very distal anus.JOINTS: No significant abnormality noted.ADDITIONAL
Left superficial perianal abscess as above. Cannot completely exclude fistulous connection with the distal anus.