Lymphosarcoma in Dogs  Clinical Oncology Service Veterinary
Hospital of the University of Pennsylvania Ultima Vez
Modificado: 10 de octubre del 2013  Share article  Imprima
English  Lymphosarcoma (lymphoma) is the third most common
cancer diagnosed in dogs. It is a cancer of lymphocytes (a type
of blood cell) and lymphoid tissues. Lymphoid tissue is normally
present in many places in the body including lymph nodes,
spleen, liver, gastrointestinal tract and bone marrow.  The
average dog with lymphosarcoma is between 6-9 years although
dogs of any age can be affected. Certain breeds (Boxer, German
Shepherd, Golden Retrievers, Scotties, Westies and Pointers) may
be more likely to develop this type of cancer. Males and females
are equally at risk. In most cases, we cannot tell what causes
lymphosarcoma.  Types of Lymphosarcoma  Lymphosarcoma can be
divided up into 5 different forms which depend upon the primary
(predominant) site of the tumor.    1. External lymph nodes: The
most common form is involvement of one