{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T10:03:27Z","timestamp":1777716207203,"version":"3.51.4"},"reference-count":34,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2009,12,24]],"date-time":"2009-12-24T00:00:00Z","timestamp":1261612800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Int J Surg Pathol"],"published-print":{"date-parts":[[2011,4]]},"abstract":"<jats:p>Posttransplant lymphoproliferative disorders (PTLDs) present a wide clinicopathological spectrum, varying from the usual Epstein-Barr virus (EBV)-driven infectious mononucleosis-type polyclonal proliferations to EBV-positive or EBV-negative proliferations indistinguishable from overt lymphomas that occur in immunocompetent individuals. PTLDs characteristically have a predilection for extranodal sites and association with EBV.These disorders are usually B-cell type, although T-cell and rare cases involving both T- and B-cell types have also been described. The initial treatment consists in decreasing the immnosupressive therapy, usually with favorable results. The authors report on a rare case of a 19-year-old girl, with post\u2014renal transplantation EBV-associated polymorphic lymphoproliferative gingival ulcerated lesions. To the best of their knowledge, this is the first case described in the English-language literature of polymorphic PTLD involving both B-cell and T-cell lineages, with an unusual immunoprofile affecting the mouth. The authors warn that this condition could be easily misdiagnosed as malignant lymphoma if not properly recognized.<\/jats:p>","DOI":"10.1177\/1066896909353599","type":"journal-article","created":{"date-parts":[[2010,1,21]],"date-time":"2010-01-21T20:13:35Z","timestamp":1264104815000},"page":"241-246","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["EBV-Associated Polymorphic Posttransplant Lymphoproliferative Disorder Presenting as Gingival Ulcers"],"prefix":"10.1177","volume":"19","author":[{"given":"Jorge","family":"Esquiche Le\u00f3n","sequence":"first","affiliation":[{"name":"Piracicaba Dental School, University of Campinas-Unicamp, Av Limeira 901, Caixa Postal 52, 13414-903, Piracicaba-SP, Brazil,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ademar","family":"Takahama J\u00fanior","sequence":"additional","affiliation":[{"name":"Piracicaba Dental School, University of Campinas-Unicamp, Av Limeira 901, Caixa Postal 52, 13414-903, Piracicaba-SP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"Vassallo","sequence":"additional","affiliation":[{"name":"CIPED, State University of Campinas Medical School, Rua Tess\u00e1lia Viera de Camargo, 126, Campinas-SP, 13083-970, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando Augusto","family":"Soares","sequence":"additional","affiliation":[{"name":"Hospital AC Camargo. 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