The aim of the work was to inform about advantages and disadvantages of surgical treatment of lower concha by means of microdebrider. The injection infiltration of lower concha by an anesthetic with adrenalin the microdebrider knife is inserted from the injection site at the anterior margin of lower concha under the mucous membrane. By pressing the knife, which acts as a raspatorium, a submucous tunnel is formed at the medial side of the bone basis of the concha. Te submucous tissues are reduced by means of a 2.9 mm microdebrider produced by Medtronic Xomed in the oscillation mode at 3.000 revolutions under the control of the endoscope until an adequate size of the concha is reached. The operation is finished by tamponade of nasal cavity. The shaver partial turbinectomy was performed in 50 patients. The subjective evaluation of nasal patency was assessed as excellent in all patients within a time lapse of at least six months. Crustae or atrophic rhinitis were not observed, synechia between the septum and lower concha was present in one case. The submucous shaver partial turbinectomy is a safe method serving for reducing the volume of lower concha with an acceptable morbidity in patients suffering from nasal obstruction. Preservation of mucosa results in a rapid healing and decreased risk of crust formation or denudation of the bone. It fulfills the conditions of functional approach to treatment of lower concha diseases.

        Key words: microdebrider, lower concha hypertrophy, lacking nasal passage/patency, partial turbinectomy.