Radiological Comparison Of Inferior Turbinate Hypertrophy In Allergic Rhinitis and Deviated Nasal Septum

Background: Inferior turbinate (IT) hypertrophy caused by allergic rhinitis and deviated nasal septum is a common contributor to nasal obstruction, influenced by changes in the thickness of its layers.Objectives: This study evaluates the thickness of the IT’s layers and their relationship to allergic rhinitis and deviated nasal septum using CT scans. The goal is to guide surgeons in selecting appropriate procedures for treating nasal obstruction due to IT hypertrophy.Patients and Methods : The study involved 120 cases (240 IT) presenting with nasal obstruction caused by IT hypertrophy, categorized into allergic rhinitis and deviated septum groups. Age, gender distribution, clinical findings, nasal endoscopy, and CT scans were analyzed.Results: Thickness measurements of the medial mucosa, lateral mucosa, and bone at both anterior and posterior ends of the IT were recorded, alongside the air space between the IT and nasal septum. Bilateral nasal obstruction was observed in all allergic rhinitis cases, while 21% of the deviated septum cases showed bilateral obstruction. Medial mucosa thickness was the primary contributor to IT hypertrophy in both groups (p < 0.001). Bone thickness doubled in the deviated septum group (from 1.03 mm to 2.31 mm) and was statistically significant compared to the allergic rhinitis group (1.03 mm to 1.91 mm). Thickness was greater posteriorly, though the airway space was more expansive due to the anterior nasal valve.Conclusions: Septoplasty, combined with manipulation of IT bone and mucosa, is recommended for achieving nasal patency.