Establishing prognostic factors for survival in treated cases of canine lymphoma involve the systematic testing of prognostic markers that appear clinically to be related to complete remission and increased overall survival time. Diagnostic markers, such as phenotypic differentiation, are widely applied but are useful only when related to specific subtypes of lymphoma. Predictive markers are those that are associated with either a shortened or prolonged survival time. Currently, such markers apply tospecific disease subtypes such as lymphoblastic lymphoma (LBL) of either immunophenotype; a disease characterized by poor responsiveness to treatment and short survival periods.
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