title: Revision endoscopic sinus surgery: six friendly surgical landmarks.
authors.affiliation: Sinus Surgery Center, Shadyside Hospital, Pittsburgh, PA 15232.
authors.forename: M
authors.initials: M
authors.lastname: May
authors.forename: B
authors.initials: B
authors.lastname: Schaitkin
authors.forename: S L
authors.initials: SL
authors.lastname: Kay
mesh_terms: D004724:Endoscopy; D006801:Humans; D008722:Methods; D010256:Paranasal Sinuses / Q000033:anatomy & histology / Q000601:surgery*