Abstract 
         
         An endoscopic endonasal technique was used in the surgical treatment of a meningioma
            compressing the optic nerve. The patient was a 58-year-old woman who had experienced
            progressive visual loss in her left eye. Magnetic resonance (MR) scans of the brain
            demonstrated a contrast-enhancing tumor mass, which was measured to be 10 × 15 mm
            in size, compressing the left optic nerve. Automated visual field examination confirmed
            left-eye visual field defects, the temporal visual field worse than the nasal. The
            tumor was excised in total endoscopically through her right nostril. Histological
            diagnosis was meningothelial meningioma. Her hospital stay was overnight. Her left-eye
            vision improved with a residual crescentic temporal-field defect. She has done well
            without tumor recurrence as evidenced by a 20-month follow-up. This is the first report
            describing endoscopic endonasal removal of an intracranial tumor compressing the optic
            nerve.
         
         
         
            
Key words 
         
         
            Endoscope - Endonasal Endoscopy - Meningioma - Optic Nerve - Transsphenoidal Surgery
          
       
    
   
      
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         hdjho@DrJho.com