Cyst Maxillary Maxillary Sinus Retention Cyst Treatment Retention Sinus Treatment Maxillary Sinus Retention Cyst remedy TondahtyuiMcfall Thursday, July 27, 2017 terrible headaches w/ sinus cyst ear, nose & throat. Omg i have cysts in my maxillary sinus and had been pretty unwell for 6 months. I h...