title: Ear polyps in posterior superior retraction pockets, herodion. Histopathological and pathogenetic aspects.
abstract: Histopathological characteristics of 20 ear herodion polyps with a certain localisation and a well-known underlying pathological process were studied in order to elucidate the pathogenesis of ear mucosal polyp formation. Only 12 of the polyps were covered with epithelium; either a squamous keratinized epithelium or a cylindrical epithelium. Three polyps were covered with cylindrical and squamous keratinized epithelium. Incipient gland formation was seen and glands were only found in 35% of the polyps. It seems possible that the polyp is a local newly formed process and may have the aim of catching, eliminating and digesting bacteria and dead cells.
authors: ENT Department, Gentofte University Hospital, Copenhagen, Denmark.
authors: P L
authors: PL
authors: Larsen
authors: M
authors: M
authors: Tos
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D004428:Ear Neoplasms / Q000209:etiology / Q000473:pathology*; D004432:Ear, Middle / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology; D011127:Polyps / Q000209:etiology / Q000473:pathology*