This patient subsequently had the lesion biopsied.
HISTOLOGY
MICROSCOPIC: Cortical white matter with a dense fibrocollagenous cyst-like structure containing non-viable racemose cysticercus organism, characterised by an undulating cuticular layer overlying cellular and fibrillar layers of the parasite. No scolices or refractile hooklets identified. The surrounding inflammatory response consists of neutrophils, lymphocytes, histiocytes and epithelioid cells and necrotic debris. No caseous necrosis or multinucleated giant cells identified. Features are consistent with neurocysticercosis with inflammatory response.