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Research Article Open Access
Objectives: To determine the prevalence of retention cysts in the paranasal sinuses and investigate the distribution of mucous retention cysts (MRCs) in the paranasal sinuses. Materials and Methods: Between November 2010 and December 2011, a certified radiologist retrospectively reviewed 510 computed tomographic images of the paranasal sinuses ordered by otolaryngologists at Okmeydan? Training and Research Hospital. Medical records, endoscopic nasal examinations, MRC size, and cyst: sinus size ratios were evaluated in patients with MRCs. The prevalence and characteristics of MRCs in the paranasal sinuses was determined. Results: The prevalence of MRCs was 15.6% (80 cases). The mean age of the patients was 37.6 years, and the male: female ratio was 1.7:1. Seventeen patients had bilateral cysts in the maxillary sinuses and 63 (78.7%) patients had unilateral cysts in the maxillary sinus, and one case each in the left frontal, right frontal, right ethmoid, and right sphenoid sinuses. Cysts were present in more than one s?nus in some cases. The mean cyst size in the maxillary sinus was 212 mm2. Eight patients required surgery, and all of these patients received Caldwell Luc procedure. Conclusions: The prevalence of MRCs was 15.6%. The majority ofcysts were located in the maxillary sinus, followed by the frontal sinuses. Caldwell Luc procedure was performed on all subjects, including those with complicated mucoceles.
Paranasal sinus, computed tomography, mucous retention cyst, prevalence., Paranasal sinus