Definition: A mucosal 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. (Stedman, 25th ed)
/blood supply /chem /secret /ultrastruct permitted; coord IM with precoord organ/neopl term (IM)
Other names Papillomas, Inverted; Inverted Papillomas; Inverted Papilloma