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1.
Cienc. tecnol. salud ; 7(1): 53-61, 2020. ^c27 cmilus
Artigo em Espanhol | LILACS | ID: biblio-1120402

RESUMO

El Virus Epstein Barr (EBV) está relacionado como agente oncogénico en el desarrollo del cáncer gástrico, atribuyéndosele el 10 % de los casos de esta neoplasia a nivel mundial. No existen estudios previos que identifiquen la presencia EBV en los pacientes con cáncer gástrico en Guatemala, por lo que en este estudio se evaluó por hibridación in situ la presencia del micro ARN EBER (Epstein Barr ­encoded RNAs) de EBV en 71 pacientes con cáncer gástrico que asistieron al Instituto de Cancerología (Incan). Se determinó una prevalencia de 21.1 % (IC 95 % [10.9, 31.3] ) (15 pacientes), mayor que la reportada en otros estudios latinoamericanos. Se determinó asociación significativa entre la expresión del EBER del EBV, y el género masculino OR = 4.9 (IC 95 % [1.4, 17.5]) p < .05. Los factores asociados fueron, el padecer diarrea OR 5.7 IC 95 % [1.5, 12.6] p = .008, y la detección del anticuerpos de Helicobacter pylori séricos, OR 7.2 (IC 95 % [1.1, 18.9]) p = .03. Aun cuando la mayoría de los pacientes que expresan el EBER de EBV desarrollaron cáncer gástrico del tipo difuso 66.67 % no existe asociación significativa p = 0.13 OR = 2.5 (IC 95 % [1.1, 8.2]).


The Epstein Barr Virus (EBV) is related, as an oncogenic agent, in the development of gastric cancer, accounting for 10 % of the cases of this neoplasm worldwide. There are no previous studies that identify the presence of EBV in patients with gastric cancer in Guatemala, so in this study the presence of the EBER micro EBV of EBV was evaluated by in situ hybridization in 71 patients with gastric cancer who attended the Cancer Institute (Incan). A prevalence of 21.1% (95 % CI [10.9, 31.3]) was determined (15 patients), higher than that reported in other Latin American studies. A significant association was found between the EBER expression of EBV, and the male gender OR = 4.9 (95 % CI [1.4, 17.5]) p < .05. The associated factors were diarrhea OR 5.7 95 % (CI [1.5, 12.6]) p = .008, and detection of Helicobacter pylori serum antibodies, OR 7.2 95 % CI [1.1, 18.9] p = .03. Although the majority of patients expressing EBV EBER developed gastric cancer of the diffuse type 66.67% there is no significant association p = 0.13, OR = 2.5 (95 % CI [1.1, 8.2]).


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Neoplasias Gástricas/patologia , Biópsia/métodos , Hibridização In Situ , Herpesvirus Humano 4 , Prevalência , Helicobacter pylori , Infecções por Vírus Epstein-Barr/diagnóstico , Diarreia , Guatemala
2.
Am J Clin Pathol ; 150(4): 310-317, 2018 Aug 30.
Artigo em Inglês | MEDLINE | ID: mdl-30007337

RESUMO

Objectives: Spontaneous rupture of the spleen is occasionally seen as the presenting event in infectious mononucleosis (IM). Diagnosis of these cases can be very challenging. Methods: We describe the morphologic and immunohistochemical findings in a series of seven splenectomy specimens removed after spontaneous rupture in patients with IM. Most cases were submitted for a second opinion since the histology of the cases suggested malignant lymphoma. Results: All the cases showed similar findings, with red pulp expansion occupied by activated T and B cells, including scattered large lymphocytes with both T- and B-cell markers, together with a polymorphic background rich in cytotoxic T cells. Clonality analysis revealed T-cell receptor clonal patterns in four of the six cases evaluated. Conclusions: IM should be considered a possible diagnosis in any case of splenic rupture whose histology suggests possible aggressive lymphoma.


Assuntos
Mononucleose Infecciosa/diagnóstico , Linfócitos/metabolismo , Linfoma/diagnóstico , Ruptura Esplênica/etiologia , Adolescente , Adulto , Biomarcadores/metabolismo , Diagnóstico Diferencial , Feminino , Seguimentos , Humanos , Imuno-Histoquímica , Mononucleose Infecciosa/complicações , Mononucleose Infecciosa/patologia , Masculino , Ruptura Espontânea , Esplenectomia , Ruptura Esplênica/diagnóstico , Ruptura Esplênica/patologia , Ruptura Esplênica/cirurgia , Adulto Jovem
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