title: Mucosal cysts of the maxillary sinus in solid organ transplant population: computerised tomography follow-up results.
abstract: BACKGROUND
  The clinical significance of maxillary sinus mucosal cysts in liver and kidney transplant recipients remains unclear.
  
  
  OBJECTIVE
  To investigate the course of maxillary mucosal cysts in liver and kidney transplantation patients.
  
  
  METHODS
  Retrospective clinical study.
  
  
  METHODS
  Paranasal sinus computed tomography scans of 169 renal and 43 hepatic transplant recipients were reviewed. The incidence, size and growth characteristics of maxillary mucosal cysts in the renal and hepatic transplant population were noted.
  
  
  RESULTS
  Overall incidence of maxillary sinus mucosal cyst in transplantation patients was found to be 24.5%, with a male to female ratio of 2:1 (p<0.05). Follow-up views of 26 patients showed that the size of the cysts increased in 19, decreased in 4, and remained the same in 3 patients. Mean growth rate of the cysts was calculated to be 6.30 ± 7.02 mm(2) per month. Most of the cysts were located on the inferior wall of the maxillary sinus.
  
  
  CONCLUSIONS
  Incidence of the maxillary mucosal cysts in renal and hepatic transplant recipients does not differ from general population, but these cysts have a greater tendency to grow. Specific measures are not needed for isolated, asymptomatic maxillary mucosal cysts in transplant populations.
authors.affiliation: Department of Otolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Erdinç
authors.initials: E
authors.lastname: Aydın
authors.affiliation: Department of Radiology, Başkent University Faculty of Medicine, İzmir, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Yerli
authors.affiliation: Clinic of Otolaryngology, Ürgüp State Hospital, Nevşehir, Turkey.
authors.forename: Suna
authors.initials: S
authors.lastname: Tanrıkulu
authors.affiliation: Department of Otolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Evren
authors.initials: E
authors.lastname: Hizal
keywords: Maxillary sinus; kidney transplantation; liver transplantation; mucosal cyst; retention cyst