Cerebral venous sinus thrombosis secondary to otomastoiditis

A 64-year-old man with chronic sinusitis and frequent antibiotic use failed a visual acuity examination. Funduscopy showed right papilloedema. There was tenderness to palpation over the right mastoid. Physical examination was otherwise normal. T2-weighted MRI of the brain demonstrated right otomastoiditis (figure 1A). Post-gadolinium T1-weighted MRI showed extensive right-sided dural enhancement (figure 1B). MR venogram of the head revealed cerebral venous sinus thrombosis (CVST) involving the superior sagittal sinus (figure …