9-year-old male with Crohn's disease, history of perianal 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: There is new wall thickening and enhancement of the sigmoid colon and rectum, consistent with inflammatory changes.BONES, SOFT TISSUES: Continued perianal soft tissue induration. Left-sided soft tissue fluid collection measures 0.9 x 0.3 cm (series 501, image 46), not significantly changed. A small right perianal focus measures 0.9 x 0.5 cm. These regions show increased signal intensity on T2-weighted imaging, decreased signal intensity on T1-weighted imaging, restricted diffusion, and enhancement, consistent with an abscess.OTHER: No significant abnormality noted.
There is new wall thickening and enhancement of the sigmoid colon and rectum, consistent with inflammatory changes. No significant interval change in the appearance of perianal abscess. 