title: The ostium of the posterior ethmoid sinus seen in the superior meatus.
authors.affiliation: Section of Otolaryngology, Halifax Medical Center, Daytona Beach, FL, USA.
authors.forename: Dewey A
authors.initials: DA
authors.lastname: Christmas
authors.forename: Joseph P
authors.initials: JP
authors.lastname: Mirante
authors.forename: Eiji
authors.initials: E
authors.lastname: Yanagisawa
mesh_terms: D004724:Endoscopy; D005005:Ethmoid Sinus / Q000033:anatomy & histology*; D006801:Humans