Nocardia brain abscess
73 year old female with profound IgA defeciency and common variable immunodeficiency.
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There are multiple ring enhancing lesions scattered throughout the brain (cerebral hemispheres, cerebellum and midbrain) with associated area of vasogenic edema in keeping with abscesses.
Small focus of acute haemorrhage in the right frontal lobe adjacent to the craniotomy flap is seen which is secondary to brain biopsy.
The brain biopsy showed necrotic abscesses containing filamentous micro-organisms in keeping with nocardia species.