Respiratory epithelial adenomatoid hamartoma of the maxillary sinus presenting as an antrochoanal polyp

AbstractRespiratory epithelial adenomatoid hamartoma (REAH) is a rare benign upper airway lesion that is characterized by abnormal glandular proliferation. Maxillary sinus localization is extremely rare. Maxillary sinus involvement along with the extension beyond the sinus could be a challenge in differential diagnosis. In this article, a case of an isolated maxillary sinus REAH extending to the choana is presented