9-year-old male with history of perianal abscess. Evaluate size of the abscess. PELVIS:PROSTATE/SEMINAL VESICLES: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: Bilateral mildly prominent inguinal lymph nodes are again noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: Left perianal soft tissue fluid collection measures 0.9 x 0.4 cm (series 401, image 41), previously measuring 1.2 x 0.4 cm. This collection is hyperintense on T2 imaging, hypointense on T1, demonstrates diffusion restriction, and enhancement; findings consistent with an abscess. Adjacent inflammation is identified on T2 imaging involving the drainage catheter tracts.OTHER: No significant abnormality noted.
Decreased size of left perineal abscess with inflammatory changes in the region of the perianal drainage catheter tracts.