Sphenoidotomy: Transnasal Approach


  • Isolated disease of sphenoid sinus


  • Enter sphenoid os between superior turbinate and septum.
  • Can remove inferior one-third of superior turbinate to visualize natural sphenoid os

Keep in Mind/Things to Remember:

  • Top of maxillary sinus and natural sphenoid os are usually in the same horizontal plane
  • Open sphenoid os is in the inferior and medial direction
  • Optic canal (above) and carotid canal (below) can be visualized in the lateral wall of the sphenoid sinus