Brain tissue shows areas and foci of dense infiltration by neutrophils, lymphocytes and macrophages with central suppuration. There is related mild gliosis and marked capillary proliferation. No evidence of specific granulomas. No evidence of atypia or malignancy.
Intra-axial, rim-enhancing, bifrontal cystic lesion with surrounding vasogenic edema and mass effect, radiologically suggestive of a tuberculoma versus a less likely necrotic tumor.
Soft tissue fragments collectively measured 2x1.5x1 cm, totally embedded.
Bifrontal cystic lesion, biopsy: