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Fig. 1A —32-year-old man with headache and general fatigue who was diagnosed with viral syndrome and discharged but returned with severe headache and confusion. Unenhanced CT (A) and CT angiography (B) of head were performed. Unenhanced CT shows large right frontal intraparenchymal hematoma and surrounding edema (arrow, A), likely representing subacute intracranial hematoma. CT angiography does not reveal any cerebral aneurysms, arteriovenous malformation, or enhancing focus as possible cause of hematoma.