A short history of nasal polyposis.

Nasal polyposis was initially considered a tumor, but came to be seen as a chronic inflammatory mucosal disease during the second half of the 20th century. Although pathogenesis remains unclear, this has not prevented progress in diagnosis and treatment, both surgical and medical, based on the hypotheses of chronic rhinosinusitis with type-2 inflammation and autoimmune inflammation maintained by the vestigial olfactory mucosa of the ethmoid.