Two cases with unusual mycetoma localizations in upper respiratory system.

Fungus balls or mycetomas are extramucosal and noninvasive accumulations of degenerating fungal hyphae. In head and neck they may localized most frequently in the paranasal sinuses, especially in the maxillary sinus. These indolent infections are mostly caused by Aspergillus spp. In this article, we present two rare fungus ball cases: one occurring in an automastoidectomy cavity of a temporal bone and the other in a concha bullosa. Typically, both patients admitted with vague symptoms consistent with chronic infection resistant to conventional antibacterial medication.