Endoscopic approaches to benign sphenoid sinus lesions: development of an algorithm based on 13 years of experience

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OBJECTIVE: To develop an algorithm for selecting the optimal endoscopic approach for benign sphenoid lesions. METHODS: Charts of 392 patients were reviewed and categorised according to disease nature and extent as follows: group 1 comprised isolated sphenoid sinus lesion cases, group 2 consisted of pansinus lesion cases and group 3 comprised lateral sphenoid recess lesion cases. Surgical approaches, difficulties and complications were noted. RESULTS: A transnasal approach was employed in 40.8 per cent of cases (23.2 per cent were group 1 patients, 16.1 per cent were group 2 patients and 1.5 per cent were group 3 patients), a transethmoidal approach was utilised in 54.3 per cent of cases (group 2 patients) and a transpterygopalatine fossa approach was selected in 4.9 per cent of cases (group 3 patients). Surgical difficulties were encountered in 11.9, 10.8 and 0 per cent of patients in whom transnasal, transethmoidal or transpterygopalatine approaches were utilised, respectively. CONCLUSION: Radio-pathological categorisation provided a means of developing an algorithm for selecting the most appropriate endoscopic approach. Transnasal sphenoidotomy should be the first choice of approach whenever applicable. Lateral sphenoid recess non-inflammatory diseases should be managed through a transpterygopalatine fossa approach. Revision surgery does not play a key role in the algorithm.

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