Reason: r/o osteo History: back, hip, buttocks pain with h/o bowel leak There is a focus of enhancing signal abnormality in the presacral space corresponding to the findings of a fluid collection seen on prior CT examination, measuring approximately 3.1 x 3.5 cm. There are foci of signal void internally which may reflect gas density. These findings are suspicious for phlegmon/early abscess formation in the correct clinical context, although no encapsulated/drainable collection is identified. Note is made of increased signal abnormality with enhancement within the anterior aspect of all of the 5 sacral segments as well as the 3 coccygeal segments suspicious for osteomyelitis. No definite cortical destruction is identified. The remainder of the bones of the pelvis are unremarkable. The imaged musculature of the pelvis is unremarkable. There is marked distention of the bladder.
Findings suspicious for osteomyelitis of the sacrum and coccyx as described above. Enhancing focus of signal abnormality in the presacral space likely represents phlegmon/early abscess formation. Marked distention of the urinary bladder.