Statistics

• Lymphoma is among the most common cancers affecting canines. It accounts for up to 83 percent of all blood cell (hematopoietic) cancers and up to 24 percent of all cancers in dogs.
  
  

Causes

• Currently, the cause of canine lymphoma is not understood, but genetics or various environmental factors (such as exposure to pesticides) may contribute to the development of lymphoma.
  
  

Symptoms

• Symptoms of lymphoma in dogs include swollen glands, weight loss, lethargy, vomiting, diarrhea, loss of appetite and an increase in water intake and urination.
  
  

Diagnosis

• To confirm canine lymphoma, the dog undergoes a physical exam, various blood tests, a urinalysis, x-rays and a biopsy of the affected lymph nodes.
  
  

Treatment

• Canine lymphoma can be difficult to treat. If detected early, surgical removal of the affected glands may be possible. For advanced cases, the dog may undergo chemotherapy or radiation therapy.