Histopathologic subtypes of pediatric lymphomas and relation to Ebstein-Barr virus: an immunohistochemical and in-situ hybridization study

Purpose: The aim of this study was toexplore the histopathologic subtypes of pediatric lymphomas and their relation with Ebstein-Barr virus infection in our region. Materials and Methods: In this retrospective study, 87 children including 36 cases with Hodgkin lymphoma and 51 cases with non-Hodgkin lymphoma were included in the study. The pathologic slides were used to investigate immunohistochemical staining with ebstein-barr virus latent membrane protein-1 and in-situ hybridization. Results: The most common histopathological subtype in hodgkin lymphoma cases was mixed cellular classical hodgkin lymphoma (55.6%). The most common histopathological subtype in Non-Hodgkin lymphoma cases was Burkitt lymphoma (51.0%). Ebstein-Barr virus latent membrane protein-1 was positive in 29 Hodgkin lymphoma. All non-Hodgkin lymphoma cases were stained negative with immunohistochemical. The positive staining rate of Hodgkin lymphoma cases with in-situ hybridization was 83.3% and this rate was 27.5% in non-Hodgkin lymphoma cases. The differences between groups for both staining methods were significant. Conclusion: The results of this study show that the distribution of histopatholojik subtypes of pediatric lymphomas similar to in developing countries. And we have observed that in-situ hybridization is more specific than immunohistochemistry because Ebstein-Barr virus positivity is more detected in in-situ hybridization.