"REAHsnp is difficult to distinguish from sinonasal polyposis, but the widening of the olfactory clefts (> 10 mm) should raise suspicion."
"There is some controversy as to whether it represents an isolated (REAHi) or an incidental pathologic finding as it is often encountered with sinonasal polyposis (~70%, REAHsnp) 1. It has also been described in association with inverted papilloma and low-grade sinonasal adenocarcinoma 1. As such, its clinical significance, especially when coexisting with sinonasal polyposis, is uncertain."
"History and etymology"