The frequency of fungal etiology of sinusitis contains between 9 and 49 % according to different authors. Fungal rhinosinusitis has been divided into noninvasive and invasive forms. Noninvasive infections include fungus ball (mycetoma) and allergic fungal rhinosinusitis. Invasive infections include acute (or fulminates) fungal rhinosinusitis and invasive chronic rhinosinusitis. The case of chronic invasive rhinosinusitis was presented. Patient performed surgery--Functional Endoscopic Sinus Surgery and paranasal sinuses operation from subcranial approach. Surgery procedures were followed by antifungal pharmacotherapy (Orungal and Worykonazol). The presented case of fungal invasive chronic rhinosinusitis was treated according to recommended procedures with surgery followed by adequate antifungal farmacotherapy. In this case we have reached a successful outcome.