inverted papilloma

papilloma /pap·il·lo·ma/ (pap″il-o´mah) a benign tumor derived from epithelium.papillo´matous

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fibroepithelial papilloma  a type containing extensive fibrous tissue.

intracanalicular papilloma  an arborizing nonmalignant growth within the ducts of certain glands, particularly of the breast.

intraductal papilloma  a tumor in a lactiferous duct, usually attached to the wall by a stalk; it may be solitary, often with a serous or bloody nipple discharge, or multiple.

inverted papilloma  one in which the proliferating epithelial cells invaginate into the underlying stroma.

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inverted papilloma

ENT An inverted or exophytic tumor of nasal cavity and paranasal sinuses, which recurs in ±²⁄₃ of cases; malignancy develops in 2% Surgical pathology A proliferation of thin epithelium overlying papillary fibrovascular fronds, found in either transitional epithelium–renal pelvis, ureters, bladder, urethra or stratified cuboidal epithelium–paranasal region,³⁄₄ of Pts also had HPV types 6 and 11 and upper respiratory tract lesions