Bovine Lymphosarcoma (Leukemia)—A Synopsis

This is the authors' abstract. We don't add key points for this paper.

LYMPHOSARCOMA IS the most common cattle tumor .Reports of the federal meat inspection service indicate a steady increase in condemnation because of leukemia , from 0.4 per 10,000 cattle carcasses in 1917 to 1.8 per 10,000 carcasses in 1958.15,16Four Forms of Bovine Lymphosarcoma There are 4 different forms of bovine lymphosarcoma .The adult form is most common and occurs in cattle 3 or more years old .Affected cows lose weight , produce less milk , and have a few scattered lymph nodes enlarged ( Fig 1 ) .The heart , Fig 1-Adult form of lymphosarcoma in a 22 -year -old cow.These are enlargements of prescapular and prefemoral lymph nodes , and emaciation .abomasum , and uterus are often affected .The thymic form ( Fig 2 ) occurs in cattle about 2 years old and is relatively rare.Scattered lymph nodes may be affected .