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The pathophysiology of idiopathic intracranial hypertension (IIH) is poorly understood. A recent MRI study of sinovenous stenoses showed a high prevalence of transverse sinus stenoses in patients with IIH compared with a control population.1 However, it remains unclear whether these appearances represent a cause or a consequence of IIH.2 The following case report illustrates radiologically the changing morphology of the cerebral venous sinuses associated with a case of treated IIH.
Case report.
A 19-year-old woman presented with a 2-week history of headache, blurred vision, and diplopia. One week before onset of headache she had taken oral penicillin for 2 days for a presumed right ear infection. Medical history was unremarkable, and she was on no medication; in particular, she had never taken the oral contraceptive pill, vitamin A …
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