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Epstein-Barr Virus in Oral Lymphoma
Malmö högskola, Faculty of Odontology (OD).
Malmö högskola, Faculty of Odontology (OD).
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [sv]

Lymfom är den tredje mest vanligt förekommande gruppen av maligna lesioner som återfinns i munhålan och den maxillofaciala regionen. Epstein-Barr-virus, som vanligen förorsakar infektiös mononukleos, har associerats med ett flertal cancersjukdomar såsom nasofaryngeal cancer och Burkitts lymfom, men endast ett fåtal studier har undersökt sambandet mellan EBV och oral cancer specifikt. Syftet med denna studie var att utröna prevalensen av EBV i orala lymfom och undersöka vilka subklasser som kan induceras av, eller hysa, EBV. Av totalt 56 lymfombiopsier extraherades 43 från biobanken på avdelningen för Oral Patologi, Malmö högskola, och inkluderades i studien. EBV detekterades genom in situ hybridisering och de EBV-positiva biopsierna analyserades ytterligare med immunohistokemi för subklassificering. EBV upptäcktes i fem fall, vilket ger en incidens på 12 %. De olika subklasserna av lymfom som hyste EBV var plasmablastiskt lymfom och diffust storcelligt Bcellslymfom. Vår konklusion är att EBV förekommer i olika subklasser av orala lymfom och med tanke på att virusspecifika behandlingar ständigt förbättras, är det alltmer viktigt att identifiera dessa EBV-associerade sjukdomar så att adekvata kliniska beslut kan fattas. Genom ytterligare forskning inom området kan diagnostiska metoder förbättras och leda till bättre subklassificering, vilket därmed kan medföra tidigare diagnostik och förbättrad behandling för drabbade patienter.

Abstract [en]

Lymphoma is the third most common group of malignant lesions found in the oral cavity and the maxillofacial region. The common Epstein-Barr virus (EBV), which usually causes infectious mononucleosis, has been associated with various cancer diseases such as nasopharyngeal carcinoma and Burkitt’s lymphoma, although only few studies have investigated the relationship between EBV and oral cancer specifically. The purpose of this project was to investigate the prevalence of EBV in oral lymphoma and which subtypes of oral lymphoma can be induced by, or harbour, EBV. Forty-three lymphoma biopsies, out of a total of 56, were retrieved from the biobank of Oral Pathology, Malmö University, and included in the study. EBV was detected with in situ hybridization and the EBV-positive specimens were further analysed with immunohistochemistry to subtype the oral lymphomas that expressed EBV mRNA. EBV was detected in five cases, a prevalence of 12 %. The lymphoma subtypes that harboured EBV were plasmablastic lymphoma and diffuse large B-cell lymphoma. Our conclusion is that EBV does occur in a subset of oral lymphomas. Thus, considering that virus-specific treatments continuously improve, it becomes increasingly important to recognize these EBV-associated diseases so that proper treatment modalities can be utilized. Through additional research in this area, diagnostic methods may be enhanced and lead to better sub-classification, which subsequently may lead to practical enhancements such as earlier diagnosis and better treatment.

Place, publisher, year, edition, pages
Malmö högskola/Odontologiska fakulteten , 2015. , p. 30
Keywords [en]
lymphoma, oral lymphoma, Epstein-Barr virus, EBV, in situ hybridization, ISH, immunohistochemistry, IHC, pathologic-anatomic diagnosis, PAD
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:mau:diva-19732Local ID: 18818OAI: oai:DiVA.org:mau-19732DiVA, id: diva2:1479576
Educational program
OD Tandläkarutbildning
Available from: 2020-10-27 Created: 2020-10-27 Last updated: 2022-06-27Bibliographically approved

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