Two cases of respiratory epithelial adenomatoid hamartoma diagnosed by postoperative pathology

Abstract

Respiratory epithelial adenomatoid hamartoma (REAH) is a hamartoma that occurs in the nose and sinuses. We herein report two cases of REAH in which chronic sinusitis and papilloma were suspected based on preoperative clinical findings but REAH was diagnosed by postoperative pathology after endoscopic sinus surgery. It is impossible to differentiate REAH from other sinus diseases by diagnostic imaging, as REAH is only shown as non-specific softtissuedensity areas on computed tomography. However, since the macroscopic findings resemble inflammatory polyps, there may be cases where these lesions are excised by a shaver without a pathological diagnosis. To improve the recognition of REAH, it is necessary to report more cases, We therefore report the details of these two cases along with a literature review.