Abstract
It is very difficult to exactly define “nasal polyps”. They have been described as edematous nasal mucosa and benign neoplasms that have a polyp body and a stalk. Edematous nasal mucosa with small polypoid protrusions in the middle meatus contrast greatly with large single polyps; edematous nasal mucosa resembles a benign neoplasm that obstructs the entire nasal cavity. The commonly used definition (that a nasal polyp is a non-neoplastic mucosal swelling that usually arises from the middle meatus and prolapses into the nasal cavity) relates to its pathogenesis, but there is no proof that a polyp is a prolapse of the mucosa. Polyps are also called “pale bags” of edematous tissue, but a morphologist will not designate the polyp epithelium as a bag and the polyp stroma as the content of the bag. Any benign neoplasm covered with an epithelium, e.g., inverted papilloma, would then be called a bag. A “neutral”, acceptable definition might be that a polyp is a pedunculated, soft, elongated structure attached to the nasal mucosa by a slim stalk or a broad base. Polyps are usually soft, mobile, have a smooth, shiny surface and are of bluish-gray or pink translucent appearance. Polyp size varies considerably but is usually approximately 1 cm in diameter (Fig. 8.1).
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Tos, M., Larsen, P.L., Larsen, K., Cayé-Thomasen, P. (2000). Nasal Polyps. In: Stamm, A.C., Draf, W. (eds) Micro-endoscopic Surgery of the Paranasal Sinuses and the Skull Base. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-57153-4_8
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DOI: https://doi.org/10.1007/978-3-642-57153-4_8
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