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No predisposing factor was detected. Microscopically, all polyps contained follicles with germinal centers, crypts lined by lymphoepithelium, and a small amount of fibrous tissue in the center of the lesion. B cells (CD20+), T cells (CD45RO+), plasma cells (\u03ba+ and \u03bb+) and vessels (lymphatic, D2-40+; blood, CD34+) presented distribution and architectural patterns as expected for lymphoid tissue of a palatine tonsil. Tonsillar lymphoid polyps are possibly hamartomas characterized by overgrowth of lymphoid elements, which maintain an architectural pattern and cellular composition similar to those of the palatine tonsil.<\/jats:p>","DOI":"10.1177\/1066896906299121","type":"journal-article","created":{"date-parts":[[2007,6,21]],"date-time":"2007-06-21T21:50:28Z","timestamp":1182462628000},"page":"155-159","source":"Crossref","is-referenced-by-count":9,"title":["Lymphoid Polyps of the Palatine Tonsil"],"prefix":"10.1177","volume":"15","author":[{"given":"Icleia","family":"Barreto","sequence":"first","affiliation":[{"name":"Department of Pathology, School of Medicine, University of Campinas, Campinas, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Priscila","family":"Juliano","sequence":"additional","affiliation":[{"name":"Department of Pathology, School of Medicine, University of Campinas, Campinas, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cristiano","family":"Chagas","sequence":"additional","affiliation":[{"name":"Department of Pathology, School of Medicine, University of Campinas, Campinas, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Albina","family":"Altemani","sequence":"additional","affiliation":[{"name":"Department of Pathology, School of Medicine, University of Campinas, Campinas, Brazil,"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2007,4,1]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2273.1978.tb00674.x"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1038\/modpathol.3880208"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1017\/S0022215100097747"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1177\/000348946006900401"},{"key":"atypb5","first-page":"279","volume":"20","author":"Heffner DK","year":"1987","journal-title":"Otolaryngol Head Neck Surg."},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1017\/S002221510009695X"},{"key":"atypb7","first-page":"1211","volume":"128","author":"Hockstein NG","year":"2002","journal-title":"Arch Otolaryngol Head Neck Surg."},{"key":"atypb8","first-page":"729","volume":"88","author":"Kasznica J.","year":"1991","journal-title":"N J Med."},{"key":"atypb9","first-page":"449","volume":"43","author":"Sah SP","year":"2000","journal-title":"Indian J Pathol Microbiol."},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1017\/S0022215100073187"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-198309000-00008"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1067\/moe.2003.48"},{"key":"atypb13","first-page":"55","volume":"64","author":"Pyun KS","year":"1985","journal-title":"Ear Nose Throat J."},{"key":"atypb14","first-page":"132","volume":"89","author":"Enomotto T.","year":"1980","journal-title":"Ann Otol"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1177\/000348943904800216"},{"key":"atypb16","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.51.7.506"},{"key":"atypb17","doi-asserted-by":"publisher","DOI":"10.1097\/00005537-200106000-00013"},{"key":"atypb18","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-5876(00)00446-8"},{"key":"atypb19","doi-asserted-by":"publisher","DOI":"10.5858\/2004-128-1186-PNLHOT"},{"key":"atypb20","unstructured":"Bouquot JE, Nikai H. 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