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Figure 1: Diagrammatic representation of the endoscopic sphenoidotomy approaches (the right nasal cavity with the nasal septum removed). 1: Going lateral to the middle turbinate through the ethmoids by opening the bulla ethmoidalis, then through the basal lamella of the middle turbinate to the posterior ethmoids, and from it locating the sphenoid ostium by the superior turbinate (transethmoidal sphenoidotomy). 2: Going medial to the middle turbinate between the middle turbinate and the nasal septum in a direct manner (transnasal sphenoidotomy). |
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