5-year-old male with right elbow pain and fever. Evaluate for osteomyelitis. Peripherally enhancing, centrally low attenuation collection abutting the anterior margin of the distal humeral metaphysis measuring 4 x 9 x 31 mm, (series 1201, image 6). There is an additional nonspecific 5 x 7 mm enhancing focus within the soft tissues of the medial arm (series 1401, image 10).BONE AND MARROW: Cortex underlying the fluid collection appears intact. There is heterogeneous signal within the distal humerus which could represent the patient's red marrow, however, it is more heterogeneous than the signal of the ulna and radius. This could reflect osteitis.SYNOVIUM: Normal.MUSCULATURE: There is increased T2 signal within the brachioradialis muscle is compatible with edema/inflammation.ADDITIONAL
1. Peripherally enhancing, centrally low attenuation collection abutting the anterior margin of the distal humeral metaphysis likely representing an abscess.2. Heterogeneous signal within the distal humerus which could represent osteitis as the cortex underlying the abscess appears intact. 