TUMORS OF THE LIVER. NEW GROWTH. 



Largely secondary, from stomach, intestine, lymph glands, spleen, pan. 

 creas; the hepatic tumor may be disproportionately large. In horse : sarcoma 

 rapidly growing soft, succulent, slow-growing, fibrous, tough, stroma with 

 round or spindle shaped cells and nuclei. Symptoms : emaciation, icterus, 

 enlarged liver, rounded tumors on rectal examination. Melanoma, in old 

 gray or white horses, with similar formations elsewhere ; not always malig- 

 nant. Lymphadenoma. Angioma. Carcinoma. Epithelioma, lesions, 

 nodular masses, white or grayish on section, and having firm stroma with 

 alveoli filled with varied cells with refrangent, deeply staining, large, multiple 

 nuclei, cancerous cachexia and variable hepatic disorder. In cattle \ sarcoma 

 adenoma, angioma, cystoma, carcinoma, epithelioma. In sheep : adenoma, 

 carcinoma. In dog : lipoma, sarcoma, encephaloid, carcinoma, epithelioma. 

 Wasting and emaciation, yellowish pallor, temporal atrophy, ascites, liver 

 enlargement, tender right hypochondrium, dyspepsia, symptoms of primary 

 deposits elsewhere. 



The great quantity of blood which passes tlirough the liver 

 lays it open, in a very decided way, to the implantation of germs 

 and biological morbid products. Hence tumors of the liver are 

 largely secondary, the primary ones being found mostly in the 

 stomach, inte-stine, abdominal lymph glands, .spleen and pancreas. 

 The primary neoplasm is often comparatively small, while the 

 hepatic one supplied with a great excess of blood may be by far 

 the most striking morbid lesion. The hepatic tumors are mostly 

 of the nature of angioma, .sarcoma, melanoma, adenoma, lipoma, 

 cystoma, carcinoma, and epithelioma. 



NEOPLASMS IN HORSES LIVER. 



Sarcoma. This is usually a secondary formation from the 

 primary tumors in the spleen and peritoneum, and it occurs as 

 multiple masses throughout the substance of the gland. The 

 liver is greatly increased in size, extending far beyond the last 

 rib on the right side, and weighing when removed as high as 70 

 lbs. (Mason), or even 88 Ifcs. (Cadeac), in extreme cases. 



The whole surface of the liver may show bulging, rounded 



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