This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal infections, Subject name: Anatomy
[{'content': 'Brodie&;s abscess is the terminology for \nSelect and explain. \nA. Subungual infection, B. chronic osteomyelitis, C. web space infection, D. infected hematoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is a long standing localized pyogenic abscess in the bone(long standing because of strong defence mechanism of the body.) It usually involves long bones. Brodie&;s abscess - A circumscribed, round/oval cavity containing pus and pieces of dead bone (sequestra) surrounded sclerosis - Most commonly seen in tibial / femoral metaphysis *may occur in epiphysis / cuboidal bone (eg: calcaneum) - Metaphyseal lesion cause no / little periosteal reaction - Diaphyseal lesion may be associated with periosteal new bone formation and marked coical thickening . ref : maheswari9th ed', 'role': 'assistant'}]