What's the Diagnosis? Case 7, Slide 10
Diagnosis: Infectious Bursitis/Osteomyelitis
Comments: A true bursa such as the olecranon bursa is a synovial lined sac that can become inflammed from infectious and non infectious entities. In either situation, the underlying bone is susceptible to the same aggressive process. MRI is highly suggestive for infection when a marrow edema pattern is present in a diffuse pattern with adjacent soft tissue edema. Thick, enhancing soft tissue or bony lesions in the setting of possible infection are essentially diagnostic. The triceps destruction with avulsion is just a “collateral” injury.
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