Cyst Maxillary Maxillary Sinus Mucous Retention Cyst Mucous Retention Sinus Maxillary Sinus Mucous Retention Cyst Willowhtyuihtyuincaid Saturday, May 13, 2017 Mucous retention cystcauses, signs, kinds &. 3. Mucous retention cyst in maxillary sinus on either facet of our nose, we've our chee...