61-year-old male, evaluate for deltoid abscess.IMAGE ACQUISITIONS: Contrast enhanced CT of the left shoulder was performed after the administration of IV contrast (120 cc of Omnipaque 350 at two cc/sec). Axial, coronal, and sagittal images were reviewed. Low-attenuation mass within the deltoid muscle is consistent with a multi-lobulated fluid collection with slight rim enhancement compatible with an abscess. No underlying evidence of osteomyelitis. If clinically warranted, this may be better evaluated by MRI.
Low-attenuation mass with slight rim enhancement within the deltoid muscle compatible with an abscess as described above. An MRI may be obtained for better evaluation if clinically warranted.