Fungal sinusitis is the inflammation of the lining mucosa of the paranasal sinuses due to fungal infection. It occurs in people with reduced immunity. The maxillary sinus is the most commonly involved. Fungi responsible for fungal sinusitis are Aspergillus fumigatus (90%), Aspergillus flavus, and Aspergillus niger. Fungal sinusitis occurs most commonly in middle-aged populations. Diabetes mellitus is the most common risk factor involved.
The types of fungal sinusitis are based on invasive and non-invasive as follows:
- Acute fulminant
- Chronic invasive
- Non Invasive
- Saprophytic infection
- Sinus fungal ball
- Eosinophil related FRS including AFRS