List differential diagnosis of osteomyelitis of long bone in a child
Ewing sarcoma, esinophilic granuloma, lymphoma, neuroblastoma metastasis and leukemia
What are the most common organisms causing osteomyelitis in children?
Staphylococcus aureus followed by B-hemolytic streptococci and S. pneumonia
Patient's parents did not consent to IV contrast administration, and hence post-contrast sequences were not obtained.
Cystic metaphyseal lesion display low signal on T1 and high signal on T2/STIR images and crosses the physis to form a similar cystic lesion at the epiphysis. It is surrounded by extensive marrow edema. Associated posterior cortical destruction and subperiosteal fluid collection are noted. Adjacent popliteal lymph nodes are seen.