Objective: To introduce endonasal drainage procedures to frontal sinus in inflammatory sinus disease and its indications, methods and efficacy.
Method: One hundred thirty two patients undergoing Draf I-III frontal sinus drainage procedures with 1-12 years follow-up were reviewed retrospectively.
Result: Forty two patients underwent type I frontal sinusotomy, 43 type II sinusotomy and 47 type III sinusotomy. A successful result was seen in these groups, 83.4%, 83.7%, and 89.4% respectively. Best effect was gained by type III sinusotomy. There was no significant difference in efficacy between the different Draf frontal sinus drainage procedures (P > 0.05).
Conclusion: Endonasal microscopic-endoscopic frontal drainage treatment of refractory, polypoid and recurrent frontal sinusitis can yield successful results.