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Chiasmal apoplexy: haemorrhage from a cavernous malformation in the optic chiasm.
  1. L Regli,
  2. N de Tribolet,
  3. F Regli,
  4. J Bogousslavsky
  1. Department of Neurosurgery, University Hospital, Lausanne, Switzerland.


    We present a patient who experienced sudden onset of orbital headache, visual loss and bitemporal visual field defect. MRI of the optic chiasm suggested a diagnosis of haemorrhage and hence a vascular malformation. Pterional craniotomy revealed an intrachiasmatic haematoma with a cavernous angioma. The malformation was totally excised and vision improved after surgery. The syndrome of chiasmal apoplexy is discussed.

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