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Veterinaria México

versión impresa ISSN 0301-5092

Resumen

ALVAREZ BERGER, Francisco J.; ABURTO FERNANDEZ, Enrique; GERARDO, Aristi Urista  y  CHAVEZ GRIS, Gilberto. Histological and immunophenotypic study of canine lymphoma in the center of Mexico. Vet. Méx [online]. 2009, vol.40, n.2, pp.141-155. ISSN 0301-5092.

Immunophenotype constitutes an important factor in the prognosis of canine lymphoma. It has been demonstrated that dogs with B-cell lymphomas have a longer life span than those with T-cell lymphomas. CD3 and CD79a antigens are the most common markers used for the immunohistochemical determination of T-cell and B-cell on formalin-fixed paraffin wax-embedded canine lymphoma tissues. This study describes the morphological and immunophenotypic characteristics of 31 cases of lymphoma in Mexico, obtained from file of the Pathology Department of Veterinary Medicine and Animal Husbandry Faculty of the National Autonomous University of Mexico. The National Cancer Institute-Working Formulation (NCI-WF) classification system was used for the histological classification. Fourteen cases (45.16%) were B cell origin, 15 cases (48.39%) were T-cell origin and 2 cases (6.45%) presented an indeterminate origin. Histopathological diffuse large cell lymphoma (DL) was the most common found (38.71%), followed by lymphocytic (DSL), immunoblastic (IB), intermediate and high-grade lymphomas represented 77.42% of the cases. In this study there was higher prevalence of T-cell lymphoma. The results in this work could indicate prevalent differences in the immunophenotype of the canine lymphoma in Mexico compared with other geographical areas.

Palabras clave : lymphoma; dog; neoplasia; immunohistochemistry.

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