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10 results

  • Unilateral Papilledema in Idiopathic Intracranial Hypertension: A Case Series

  • Emily Swinkin, Pejman Jabehdar Maralani, Arun NE Sundaram
  • Journal:
    Canadian Journal of Neurological Sciences / Volume 49 / Issue 2 / March 2022
    Published online by Cambridge University Press:
    23 April 2021, pp. 278-281
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  • Idiopathic intracranial hypertension (IIH) typically presents with bilateral papilledema; however, highly asymmetric and rare unilateral cases have been reported. We report three cases of IIH meeting modified Dandy criteria presenting with unilateral papilledema. Magnetic resonance imaging (MRI) demonstrated bilateral distention of the optic nerve sheaths and computed tomography (CT) of the orbits demonstrated a smaller diameter of the optic canal in the unaffected eye in two cases. Papilledema fully resolved in all with acetazolamide. Of postulated mechanisms, we suspect that differences in bony optic canal diameter, compliance of the lamina cribrosa, and optic nerve sheath anatomy may contribute to asymmetry.

  • When the Problem Became the Solution

  • Ari Shemesh, Laila Al-Shafai, Timo Krings, Edward Margolin
  • Journal:
    Canadian Journal of Neurological Sciences / Volume 46 / Issue 6 / November 2019
    Published online by Cambridge University Press:
    04 July 2019, pp. 767-769
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  • We present a unique case where a young man developed subtle cavernous sinus thrombosis (CST) due to underlying hypercoagulable state. He also had coexisting frontal lobe brain dural arteriovenous fistula (bdAVF). After CST developed, venous drainage from the optic nerve was redirected into the frontal lobe which was already under high venous pressure because of preexisting bdAVF. This caused backflow of venous blood into the optic nerve causing massive persistent optic nerve head swelling. Presumed acute venous hypertension event within bdAVF caused frontal mass effect presenting as seizure leading to thrombosis of bdAVF.

  • Uveitis and the Diagnosis of Multiple Sclerosis

  • Farzin Forooghian
  • Journal:
    Canadian Journal of Neurological Sciences / Volume 44 / Issue 3 / May 2017
    Published online by Cambridge University Press:
    07 June 2016, pp. 334-335
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