A 49 year old man presents following a generalized tonic-clonic seizure of 2 minutes duration. He also complains of weakness of the left side since waking up today. He had a persistent headache for the last 2 weeks, which was worse upon waking up and coughing. His medical history is otherwise unremarkable.
WBC/DC: 6,000/mm3 N: 65%, L: 30% Hb: 13.5 g/dl PCV: 39 % Platelets: 256,000/mm3
The CT scan of the brain appears normal.
T1 weighted MRI imaging shows an abnormal high signal in the superior sagittal sinus, while MRV shows absence of flow in the same region.
A lumbar puncture will be arranged tomorrow.