In the vestibule and nostril, papillomas are usually stratified squamous arising on the skin surface. Rarely do they recur after simple removal, and malignant transformation is seldom a problem. Abnormal hyperplastic changes of the epithelium are frequent, but if similar criteria of assessment for possible cancerous or precancerous change are used to those applied in other stratified squamous epithelia (see Chapter 34), a diagnosis of malignancy will be unusual.
KeywordsAdenoma Germinal Luminal Noma Papilloma
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