Brodie’s abscess is a type of osteomyelitis described as which?

Brodie’s abscess is a type of osteomyelitis described as which?

• A. Acute osteomyelitis
• B. Chronic osteomyelitis
• C. Subacute osteomyelitis
• D. Pyogenic osteomyelitis

Answer: (C)

Brodie’s abscess represents a localized, contained infection in the bone that fits a subacute osteomyelitis pattern. It typically presents as persistent, localized bone pain with only mild or minimal systemic illness, and radiographs show a well-defined intraosseous abscess with surrounding sclerosis in the metaphysis, often in the tibia of children or adolescents. This combination—prolonged but not acutely toxic symptoms plus a focal, well-marginated lesion—aligns with subacute osteomyelitis rather than acute (which has fever and rapid decline) or chronic (which features sequestrum, involucrum, and often draining sinuses). The term pyogenic osteomyelitis describes the infectious pus-forming process, not the stage; Brodie’s abscess is typically due to pyogenic organisms, but its defining description is subacute.