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
Brodie&;s abscess is the terminology for 
Select and explain. 
A. Subungual infection, B. chronic osteomyelitis, C. web space infection, D. infected hematoma
B: chronic osteomyelitis
Answer: B: chronic osteomyelitis 
Explanation: 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