title: Maxillary mucosal cyst is not a manifestation of rhinosinusitis: results of a prospective three-dimensional CT study of ophthalmic patients.
abstract: BACKGROUND
  Mucosal cysts in the maxillary antrum (MMC) are a common finding in imaging of the paranasal sinuses. Their significance remains in doubt and their prevalence in the general nonrhinitic population is unknown.
  
  
  OBJECTIVE
  To establish the prevalence of MMCs in patients without nasal complaints and identify any association with putative causative factors. To identify any correlation between objective radiologic evidence of chronic rhinosinusitis or dental disease and the presence of cysts.
  
  
  METHODS
  Prospective case series.
  
  
  METHODS
  Computed tomography (CT) images from 257 patients undergoing scans of the orbits for ophthalmic reasons were entered into this study. Patients responded to a questionnaire prior to scanning inquiring about nasal complaints, treatment for nasal disorders, previous nasal injury, allergy, asthma, recent upper respiratory tract infection, and dental root disease of the upper jaw.
  
  
  RESULTS
  Overall 35.6% of patients studied had radiologic evidence of at least one maxillary mucosal cyst. There was no association between the presence of cysts and subjective or objective evidence of sinus or dental disease. Specifically, there was no correlation between the presence of cysts and the total and ostiomeatal complex Lund-Mackay radiologic scores.
  
  
  CONCLUSIONS
  Maxillary mucosal cysts are prevalent in nonrhinitic patients and do not reflect sinus or dental disease. Their presence should not be an indication for sinus surgery.
authors.affiliation: Royal National Throat Nose and Ear Hospital, London, United Kingdom. jeevekana@hotmail.com
authors.forename: Jeeve
authors.initials: J
authors.lastname: Kanagalingam
authors.forename: Kunwar
authors.initials: K
authors.lastname: Bhatia
authors.forename: Christos
authors.initials: C
authors.lastname: Georgalas
authors.forename: Wytske
authors.initials: W
authors.lastname: Fokkens
authors.forename: Katherine
authors.initials: K
authors.lastname: Miszkiel
authors.forename: Valerie J
authors.initials: VJ
authors.lastname: Lund
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016009:Chi-Square Distribution; D002648:Child; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D007570:Jaw Cysts / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging* / Q000473:pathology; D008875:Middle Aged; D009297:Nasal Mucosa / Q000000981:diagnostic imaging* / Q000473:pathology; D011446:Prospective Studies; D012220:Rhinitis / Q000150:complications / Q000000981:diagnostic imaging; D012852:Sinusitis / Q000150:complications / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000379:methods*