38-year-old male with history of UC s/p ex lap, loop ileostomy, EUA, drainage of perirectal abscess evaluate response of drainage Presacral soft tissue and peritoneal/retroperitoneal inflammatory changes are better evaluated on recent prior CT abdomen/pelvis. Right paraspinal muscle abscess measures 1.6 x 2.1 cm (series 801 image 8), previously 2.6 x 2.1 cm, with persistent focus of gas. Left paraspinal muscle abscess measures 1.3 x 1.8 cm (series 801 image 6), previously 1.6 x 2.1 cm, with persistent focus of gas. There is surrounding paraspinal inflammatory changes.Previously seen sacral epidural abscess measures 0.6 x 0.4 cm (series 801 image 8), previously 0.9 x 0.4 cm. Previously seen lumbar epidural abscess measures 0.8 x 0.6 cm (series 801 image 14), previously 1.2 x 0.9 cm. There is decreased mass effect on the thecal sac. No new abnormal fluid collection is identified. Bone marrow signal is benign. Alignment is normal without subluxation. Vertebral body heights and disc heights are maintained. Normal appearing conus terminates at L1 level. No intraspinal hematoma or mass. No significant degenerative disc disease.
1. Persistent but decreasing in size sacral and lumbar epidural and paraspinal soft tissue abscesses.2.There is extensive retroperitoneal and peritoneal inflammatory change present which we best assessed using CT of the abdomen if clinically appropriate.