RESUMEN
BACKGROUND AND OBJECTIVES: A considerable proportion of sinus diseases is associated with a unilateral lesion. Unilateral paranasal pathological lesions require precise preoperative diagnosis and histopathological assessment. This study aimed to analyze the changes in etiologies and clinical characteristics of operated unilateral sinus diseases between 2005 and 2015. SUBJECTS AND METHODS: Two hundred eighteen operated cases with unilateral sinus disease in 2005 and 2015 were reviewed to retrospectively analyze the etiologies and clinical characteristics. RESULTS: In 2015 compared with 2005, the proportion of unilateral sinus disease and patient age were increased. The proportions of patients with allergic rhinitis and hypertension were significantly increased in 2015. The leading cause of unilateral sinus lesions was nasal polyp, followed by fungus, tumor, mucocele, anatomical variation, odontogenic sinusitis, and foreign body. This ranking did not change between 2005 and 2015. The number of patients with fungal sinusitis was significantly increased in 2015. The direction of nasal septal deviation had no statistically significant relation with unilateral sinus disease. CONCLUSION: This comparison study of unilateral sinus disease between 2005 and 2015 showed that the proportion of fungal sinusitis, patient age, and patients with underlying disease were increased.