. Fig. 52.—Ulceration of the articular cartilage in infectious rheumatism. consequence of infection of the thrombus, of umbilical phlebitis, or of infective peritonitis, etc. The infectious agent reaches the liver through the blood-vessels, then attains the posterior vena cava, after which the infection assumes the gravest possible character, producing complications like arthritis and purulent infection, with the formation of multiple abscesses in the depths of the viscera. The Staphylococcus aureus and various streptococci are the most frequent but not the only causes of these infections. The


. Fig. 52.—Ulceration of the articular cartilage in infectious rheumatism. consequence of infection of the thrombus, of umbilical phlebitis, or of infective peritonitis, etc. The infectious agent reaches the liver through the blood-vessels, then attains the posterior vena cava, after which the infection assumes the gravest possible character, producing complications like arthritis and purulent infection, with the formation of multiple abscesses in the depths of the viscera. The Staphylococcus aureus and various streptococci are the most frequent but not the only causes of these infections. The diagnosis is not difficult, provided the disease be not mistaken for true rheumatism. As true rheumatism is very rare in young animals, and as, on the other hand, attention is aroused by the presence of lesions of the umbilicus and by the existence of diarrhceic enteritis, rachitis, etc., there is seldom room for doubt. Prognosis. The prognosis is extremely grave whenever the case


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