The authors analyze a group of 14 patients with mycotic infection of the nasal cavity and paranasal sinuses. In 12 instances Aspergillus infection was involved and in two cases Candida infection. In 10 instances the mycosis was combined with bacterial infection – Gram positive and Gram negative microorganisms. Six patients were treated on a long-term basis with antibiotics. As to local predisposing factors, in nine instances chronic relapsing bacterial sinusitis was found, in seven instances nasal polyps, in five instances a bullous middle concha and in three instances deviation of the nasal septum. The diagnosis was based on CT examination, rhinoendoscopy and histological examination which classfied the disease. In six instances a non-invasive unilateral aspergillosis of the maxillary sinus was involeved, in one instance the maxillary sinus and ethmoid sinuses, in two instances the sphenoid cavity and in two instances the bullous middle concha and maxillary sinus. Candida infection affected in one case the maxillary sinus and in one case the maxillary sinus and the anterior ethmoid sinuses. All patients were subjected to rhinoendoscopic intervention. In five instances a combined operation was performed using also an external approach. In three instances the operation was safeguarded by antimycotics. After treatment the patients had no relapses.

        Key words: mycosis aspergillosis, candidosis of the nasal and paranasal sinuses, rhinoendoscopic surgery.