Preoperatively, the patient was received at the hospital by the nursing team and escorted to the operating room for local anaesthesia. Patients received no premedication and were placed in a semi-seated position to limit the risk of inhalation. Local anaesthesia was performed by dabbing the nasal cavities with cotton-wool soaked in naphazoline with xylocaine for 10 minutes. No infiltration of vasoconstrictor was performed. Using a microdebrider (Medtronic® 2.9 mm blade, Dublin, Ireland) connected to a suction tube, the surgery consisted in polyp removal, without opening the paranasal sinuses that were not opened during previous operations. Posterior nasal packings were used to prevent inhalation only in case of significant intraoperative bleeding. Most of the time, posterior nasal packings were not needed as small amounts of bleeding were easily suctioned by the microdebrider. Postoperative treatment included large-volume nasal lavages, corticosteroid nasal sprays (400 micrograms a day) and antibiotic therapy (amoxicillin-clavulanic acid for 7 days). No systemic corticosteroid therapy was prescribed in any case.