Unilateral papilledema

Fundus picture – Papilledema
Image by The eyes have it

  • Papilledema is usually bilateral (See Why papilledema occurs bilaterally? )
  • Under certain special circumstances, papilledema can be unilateral. They are:
    • Foster Kennedy syndrome
      • Intracranial lesions that exert pressure on one optic nerve often leads to unilateral optic atrophy
      • If these lesions are large enough, they may cause increased intracranial tension and papilledema in the opposite eye
      • Seen in :
        • olfactory groove meningiomas
        • frontal lobe tumours
    • Pseudo Foster Kennedy syndrome
      • Increased intracranial pressure with ppre existingunilateral optic atrophy (due to any cause) again results in unilateral papilledema of opposite eye

Frontal lobe tumour – MRI. (Frontal lobe tumours can cause unilateral papilledema)
Image courtesy of Radiopaedia.org (the whole case can be seen here)

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Why papilledema occurs bilaterally?

Fundus picture - Papilledema Image by The eyes have it Papilledema is optic disc edema caused by increased intracranial tension...

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