Headache from chronic subdural hematoma: negative CT, positive MRI.
D001921:Brain / Q000473:pathology; D006261:Headache / Q000209:etiology*; D020200:Hematoma, Subdural, Chronic / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed