Background: The incidence and potential disease impact of paranasal sinus anatomic variants in patients with recurrent acute rhinosinusitis (RARS) has important implications for management, including surgery, but is incompletely defined.
Methods: A retrospective review of 26 patients with RARS who had undergone computed tomography (CT) was performed. Patient demographics, RARS severity and comorbidities were reviewed. CT scans were reviewed for the incidence of anatomic variants in all patients. The pattern of inflammatory changes was explored in the subset of patients with acute rhinosinusitis at the time of CT. Potential correlation between the presence of anatomic variants and disease severity were investigated.
Results: In the patient cohort who met inclusion criteria, the most common variants included agger nasi cell (88.5%), concha bullosa (53.8%), infraorbital cell (50%), and deviated nasal septum with middle meatus obstruction (42%). In exploring correlations with RARS severity, type 2 frontal cells correlated with a greater number of years with RARS (0.0363). In the 23 patients who underwent CT at the time of an acute infection, no statistically significant correlation was found between severity or location of inflammatory changes and the presence of anatomic variants.
Conclusion: This study describes the incidence of anatomic variants in a cohort of patients with RARS. A correlation between the presence of anatomic variants and the pattern of inflammatory changes was not identified.
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