D2I2.
infection

Brodie abscess

A Brodie is a subacute osteomyelitis, appearing as an accumulation of pus in bone, frequently with an insidious onset. Brodie's abscess is characterized by pain and swelling without fever, often resulting from diabetic wounds, fracture-related bone , or haematogenous osteomyelitis.

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Plain-language summary adapted from Wikipedia. Not medical advice.