02268nam a2200265 a 450000100080000000500110000800800410001910000230006024501050008326000830018850001570027152013330042865000130176165000390177465000190181365000130183265000240184565000100186970000220187970000250190170000200192670000230194670000200196970000130198918536872024-01-22       2009    bl uuuu     u00u1 u    #d1 aALVES, L. de R. N.  aCompressão e estenose esofágica associadas à linfadenite caseosa em ovino.h[electronic resource]  aCiência Animal Brasileira, v. 10, n. 3, p. 164-169, 2009. Suplemento 1.c2009  aEdição das palestras e resumos de trabalho apresentados durante o VIII CONGRESSO BRASILEIRO DE BUIATRIA, realizado em Belo Horizonte, outubro de 2009.  aThis paper describes the occurrence of esophageal compression and stenosis associated with caseous lymphadenitis in sheep from Minas Gerais, Brazil. Over a four-month period, clinical signs were progressive and included episodes of regurgitation, coughing, and dyspnea after eating. Thoracic radiography revealed esophageal dilatation and the presence of a round radiopaque mass in the mediastinum. In view of a poor prognosis, euthanasia was performed. Grossly, aortic and thoracic lymph nodes were enlarged in the mediastinal region due to abscess formation. Consequently, there was compression, local stenosis, and moderate cranial dilatation. The ulcer in the esophageal mucosa communicated with the abscess within the mediastinal lymph nodes and drained its exsudate into the lumen. Mammary and uterine abscesses were also found, all of which were assessed through morphological and biochemical examination. Microscopic analysis showed severe lymphadenitis and ulcerative esophagitis associated with chronic active inflammation of adventitial and muscular layers. Corynebacterium pseudotuberculosis, the causative agent of caseous lymphadenitis in sheep and goats, was isolated. These findings highlight the importance of considering caseous lymphadenitis as differential diagnosis of food regurgitation in small ruminants.  aAbscesso  aCorynebacterium pseudotuberculosis  aDoença animal  aEstenose  aLinfadenite caseosa  aOvino1 aARAÚJO, M. R. de1 aCAVALCANTI, L. F. L.1 aGOMES, M. G. T.1 aPANIAGO, J. del G.1 aCARNEIRO, R. A.1 aECCO, R.