title: Pseudocyst of the maxillary sinus.
abstract: A case report is presented involving the endodontic retreatment of a maxillary second molar associated with a sinus radiopacity. Disappearance of sinus pathosis occurred within 6 days after root canal debridement. A direct relationship between apical pathosis and a pseudocyst of the maxillary sinus is suggested. Thirteen-month recall shows no recurrence.
authors.affiliation: Department of Endodontics, Indiana University School of Dentistry, Indianapolis.
authors.forename: A
authors.initials: A
authors.lastname: MacDonald
authors.forename: C W
authors.initials: CW
authors.lastname: Newton
mesh_terms: D000328:Adult; D006801:Humans; D015994:Incidence; D008297:Male; D008443:Maxillary Sinus; D009078:Mucocele / Q000209:etiology* / Q000473:pathology; D010254:Paranasal Sinus Diseases / Q000209:etiology; D011671:Pulpitis / Q000150:complications