Linfoma canino

Abstract

Lymphomas are malignant neoplasms characterized by the proliferation of lymphocytes, histiocytes and their precursors and derivatives. In dogs the etiology is considered spontaneous, unlike what happens in human, feline, bovine, birds and some primates, where the etology can be viral. It affects adult dogs to the elderly, with no gender predisposition, but there is evidence that the racial factor should be considered. They can be classified according to anatomical shape, cytohistological characteristics and immunophenotype. The most frequent anatomical form is multicentric, which presents as generalized and painless lymphadenopathy. Intermediate and high grade lymphomas are the most common, however the literature presents varied data regarding the frequency of the immunophenotype T or B. Clinical signs vary according to the neoplasia's localization.