[The clinical diagnosis of bovine leukosis (author's transl)].

A comprehensive review of clinical findings in the various forms of bovine leukosis. Enzootic lymphoid leukosis caused by a virus is relatively common in Germany and therefore is dealth with in detail. Several possible complications of this disease are discussed. This is followed by a brief review of sporadic monocytic leukosis, sporadic lymphoid leukosis in calves, sporadic lymphoid leukosis in young cattle (thymic "sarcoma"), sporadic lymphoid cutaneous leukosis and sporadic mast-cell leukosis. Particularly those clinical findings which are of importance in a differential diagnosis are referred to.