The diagnostic assessment of canine lymphoma: implications for treatment

Lymphoma in dogs is a heterogeneous cancer with highly variable prognosis. Many types of canine lymphoma have similar counterparts in the World Health Organization classification of human lymphoid tumors. The most common variant of canine lymphoma is diffuse large B-cell lymphoma, which, if treated with multiagent chemotherapy, has a survival time of approximately 12 months. T-cell lymphomas are more heterogeneous and high- and low-grade variants are common, which necessitates classification beyond B- versus T-cell lineage.