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Juvenile pilocytic astrocytoma masquerading as amblyopia
1New England Eye Center, Tufts University School of Medicine, Boston, MA 02111, USA.
Purpose:
A healthy 13-year-old girl, previously diagnosed with amblyopia in her right eye, was seen in consultation after her vision continued to decrease.
Methods:
A complete ophthalmologic examination including visual field testing and optic nerve photography was performed in the neuro-ophthalmologic clinic. Magnetic resonance imaging study was also obtained.
Results:
Visual sensory deficits and pale optic nerves were noted on clinical examination. Visual field testing showed a chiasmatic junctional defect. Magnetic resonance imaging verified a large chiasmatic mass, histologically proven to be a juvenile pilocytic astrocytoma.
Conclusion:
Early recognition of signs and symptoms of chiasmatic lesions is essential for preventing visual loss.