PMC10262133_01
MRI of right shoulder (1) showing ill-defined area of signal abnormality involving the lateral aspect of the greater tuberosity (arrow). It demonstrates a low signal intensity on T1 (A) and a bright signal on the T2 fat-saturated images (B). On the post-contrast image (C), the majority of the intramedullary component demonstrates thick peripheral rim enhancement and areas of solid enhancement, indicating osteomyelitis
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Fig1
MRI shoulder showed abscess-like lesion in the proximal humerus (Fig. 1).
The section shows granulomatous inflammation with foci of necrosis in the center
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Fig2
Biopsy specimen of the bone revealed necrotizing granulomatous inflammation and abscess formation (Fig. 2).
Follow-up MRI (A) resolving of proximal humeral intramedullary signal abnormality and appears organized in appearance with no abnormal high signal intensity in T2 (B) or abnormal enhancement (C). The picture is in keeping with resolving of the osteomyelitis with granulation tissue. No new changes or areas worrisome for infection
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Fig3