Papilloma on nasal septum. Papilloma refers to a benign epithelial tumor growing exophytically (outwardly projecting) in finger-like fronds. In this context papilla refers to the projection created by the tumor, not a tumor on an already existing papilla (such as the nipple). When used without context, it frequently refers to infections caused by human papillomavirus (HPV), such as warts. There are, however, a number of other conditions that cause papilloma.
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