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WHO Classification of Tumours
Schneiderian papilloma, NOS
Nasal cavity and Sinuses


Definition

Schneiderian papillomas are benign neoplasms that are derived from ciliated respiratory mucosa that lines the nasal cavity and paranasal sinuses, so-called
Schneiderian membraneare. They are classified into inverting (endophytic), exophytic (fungiform, everted) and oncocytic (cylindirc cell) varieties and associated with three characteristics: tendency to recur, capacity for local destruction, and association with squamous cell carcinoma

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Barnes L, Eveson JW, Reichart P, Sidransky D (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Head and Neck Tumours.
3rd Edition
IARC Press: Lyon 2005



. The inverting and exophytic varieties are the most common, and the inverting variety has the highest rate of association with malignancy
Click to access Pubmed
Clarke SR, Amedee RG (1997)
Schneiderian papilloma.
J La State Med Soc 149: 310-5



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