Predictive significance of computed tomography in bilateral sinonasal respiratory epithelial adenomatoid hamartoma

KEY POINTS: Respiratory epithelial adenomatoid hamartoma (REAH) is easily confused with nasal polyps (NP). The typical manifestation of REAH on CT is the enlargement of bilateral olfactory clefts (OCs). The widening of the OCs in the CT scan is a biomarker for diagnosing REAH associated with NP.