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papilloma (pap″ĭ-lo´mә) a benign tumor derived from epithelium. Papillomas may arise from skin, mucous membranes, or glandular ducts. adj., papillo´matous., adj. 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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