Lung lesions of swine. I. Changes caused by Stephanurus dentatus

Nogueira, R.H.G.; Lucio, W.F.; Silva, J.M.L. da; Chquiloff, M.A.G.; Nascimento, E.F. do

Arquivos da Escola de Veterinaria da Universidade Federal de Minas Gerais 30(1): 5-9


Accession: 000423835

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In 1200 bacon pigs examined at an abattoir, lung lesions due to Stephanurus dentatus were identified in 25. Macroscopically the lesions were focal, rounded, or elongated and tortuous, dark red in colour and either soft or hard in consistency. Occasionally cysts or abscesses were observed, and the parasite was seen in five cases. Macroscopically, necrosis, haemorrhage and exudation with neutrophiles, lymphocytes and mononuclear cells (but, surprisingly, an eosinophilic reaction in one case only) were found in interstitial tissue. These necrotic areas were surrounded by acute or chronic granulation tissue. In all the 25 cases with lung lesions, kidney lesions characteristic of Stephanurus dentatus infection were also observed.