Maxillary sinus fungus ball as a cause for facial pain: Analysis of three cases.

The development of a sinus fungus ball (FB) is a form of non-invasive fungal sinusitis that generally affects immunocompetent individuals. In this report, 3 cases of maxillary sinus FB are described, including 1 bilateral maxillary sinus case. The fungal debris was cleared using endoscopic sinus surgery in each case. No recurrence was observed in follow-up at the 6th, 7th, or 26th month. The headache and facial pain symptoms of the patients improved. Efficient cleansing of the maxillary sinus, particularly the anterior wall, improves the recurrence ratio.