Huge Respiratory Epithelial Adenomatoid Hamartoma Originating from the Inferior Nasal Turbinate: A Case Report.

Respiratory epithelial adenomatoid hamartoma (REAH) is a recently described entity consisted of benign glandular proliferations lined by pseudostratified respiratory epithelium. We report a case of a 22-year-old male patient with 7-year history of nasal obstruction and headache resulting from a huge left-sided nasal lesion. Computed tomography, magnetic resonance and biopsy were performed to make a provisional diagnosis of REAH originating from the left-sided inferior turbinate. The definitive diagnosis of REAH was made by histopathological examination of the removed mass. We also discuss the origin and differential diagnosis of these rare lesions.