A Case Report on Periarteritis Nodosa of a Cow

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The first animal case of periarteritis nodosa in Japan was reported. The case was a 6-year-old cow of Japanese black breed, and its chief symptoms were emaciation, groaning, tachypnea, accentuation of heart sounds and tenderness at the cardiac region. As a result of the pathological examination, a typical lesion of periarteritis nodosa was found in all organs examined. The affected arterioles showed nodular and funicular thickening macroscopically, and the arteritic lesions in all stages of development were found microscopically. These lesions were classified in the following 4 stages; (1) degenerative stage (fibrinoid degeneration and edema of the arterial wall), (2) acute inflammatory stage (marked cellular infiltration together with fibrinoid degeneration and the destruction of elastic laminae), (3) granulation tissue stage (granulation tissue formation in and around the arterial wall and intimal proliferation), and (4) healed granulation tissue stage (progressive fibrosis of the arterial wall). The changes of earlier stages were not so common as those of later stages. As findings other than the arteritic lesion, chronic vesicular emphysema and focal atelectasis of the lungs, hypertrophy of the myocardium, edema and hyaline degeneration of the skeletal muscles and focal amyloidosis of the liver and portal lymph node were observed. The vascular changes seemed to have little influence upon the organ which was supported by the vessel in comparison with the human case of the disease. The authors wish to express their great thanks to Assist. Prof. Kiichi ISHIDA, Tokyo University, for his help in the collection of literature.
大阪府立大学の論文
1959-12-31

A Case Report on Periarteritis Nodosa of a Cow

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