Respiratory epithelial adenomatoid hamartoma originating from nasal septum.

Respiratory epithelial adenomatoid hamartoma (REAH) is a rare benign lesion in nasal cavity. We report two cases of REAH of the nasal cavity arising from nasal septum. The etiology of REAH is unknown although inflammation may induce gland proliferation observed in hamartomas. One of our cases was associated with nasal polyposis. REAH is a self-limiting disease, so it is important to differentiate REAH from other pathologic process, including inverted papilloma and low-grade adenocarcinoma. The treatment of choice is complete excision through a conservative approach.