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an eplithelial tumor of the urinary bladder or nasal cavity in which proliferating epithelium is invaginated beneath the surface and is more smoothly rounded than in other papillomas.
Farlex Partner Medical Dictionary © Farlex 2012
inverted papillomaENT 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
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.