Unusual pathologic lesions in a heifer affected by Trueperella pyogenes
Four Hereford heifers of approximately 18 months of age presented nodular formations in the uterus detected by transrectal palpation. This pathology had been previously diagnosed in the herd, which led to the early discarding of 1-2% of heifers per year. Post mortem examination in a severely affected heifer revealed multiple abscesses in the pelvic and abdominal cavity associated with the uterus, serosa of the forelimbs, and liver. Microscopically, the abscesses were characterized by a necrotic center with viable and degenerated neutrophils and necrotic debris, surrounded by a well-defined wall of connective tissue. In addition, multifocal neutrophilic ruminitis associated with acidosis was observed. Intralesional gram-positive bacilli were detected in the abscesses. Trueperella pyogenes was isolated from the purulent content. It is assumed that rumen acidosis was the origin of the dissemination and abscess formation of T. pyogenes in various tissues, including the uterus.
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Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria
2023
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oai:ojs.csi.unmsm:article-241962023-08-26T00:27:25Z Unusual pathologic lesions in a heifer affected by Trueperella pyogenes Lesiones patológicas inusuales en una vaquillona afectada por Trueperella pyogenes Lázaro, Fermín Morrell, Eleonora Scioli, Valeria Malena, Rosana Cantón, Germán Casamayouret, Nicolás Fiorentino, Andrea García, Juan Agustín cattle infectious diseases reproductive pathology ruminants bovinos enfermedades infecciosas patología reproductiva rumiantes Four Hereford heifers of approximately 18 months of age presented nodular formations in the uterus detected by transrectal palpation. This pathology had been previously diagnosed in the herd, which led to the early discarding of 1-2% of heifers per year. Post mortem examination in a severely affected heifer revealed multiple abscesses in the pelvic and abdominal cavity associated with the uterus, serosa of the forelimbs, and liver. Microscopically, the abscesses were characterized by a necrotic center with viable and degenerated neutrophils and necrotic debris, surrounded by a well-defined wall of connective tissue. In addition, multifocal neutrophilic ruminitis associated with acidosis was observed. Intralesional gram-positive bacilli were detected in the abscesses. Trueperella pyogenes was isolated from the purulent content. It is assumed that rumen acidosis was the origin of the dissemination and abscess formation of T. pyogenes in various tissues, including the uterus. Cuatro vaquillonas Hereford de aproximadamente 18 meses de edad presentaron formaciones nodulares en el útero detectadas por palpación transrectal. Esta patología había sido previamente diagnosticada en el rodeo, lo que llevó al descarte temprano de 1-2% de vaquillonas por año. El examen post mortem en una vaquillona gravemente afectada reveló múltiples abscesos en la cavidad pélvica y abdominal asociados al útero, serosa de los preestómagos y el hígado. Microscópicamente, los abscesos se caracterizaron por un centro necrótico con neutrófilos viables y degenerados y restos necróticos, rodeados por una pared bien definida de tejido conectivo. Además, se observó ruminitis neutrofílica multifocal asociada a acidosis. Se detectaron bacilos grampositivos intralesionales en los abscesos. Del contenido purulento se aisló Trueperella pyogenes. Se asume que la acidosis ruminal fue el origen de la diseminación y formación de abscesos de T. pyogenes en varios tejidos, incluido el útero. Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria 2023-08-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article application/pdf https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/24196 10.15381/rivep.v34i4.24196 Revista de Investigaciones Veterinarias del Perú; Vol. 34 No. 4 (2023); e24196 Revista de Investigaciones Veterinarias del Perú; Vol. 34 Núm. 4 (2023); e24196 1682-3419 1609-9117 eng https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/24196/19876 Derechos de autor 2023 Fermín Lázaro, Eleonora Morrell, Valeria Scioli, Rosana Malena, Germán Cantón, Nicolás Casamayouret, Andrea Fiorentino, Juan Agustín García http://creativecommons.org/licenses/by/4.0 |
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Lázaro, Fermín Morrell, Eleonora Scioli, Valeria Malena, Rosana Cantón, Germán Casamayouret, Nicolás Fiorentino, Andrea García, Juan Agustín |
spellingShingle |
Lázaro, Fermín Morrell, Eleonora Scioli, Valeria Malena, Rosana Cantón, Germán Casamayouret, Nicolás Fiorentino, Andrea García, Juan Agustín Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
author_facet |
Lázaro, Fermín Morrell, Eleonora Scioli, Valeria Malena, Rosana Cantón, Germán Casamayouret, Nicolás Fiorentino, Andrea García, Juan Agustín |
author_sort |
Lázaro, Fermín |
title |
Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
title_short |
Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
title_full |
Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
title_fullStr |
Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
title_full_unstemmed |
Unusual pathologic lesions in a heifer affected by Trueperella pyogenes |
title_sort |
unusual pathologic lesions in a heifer affected by trueperella pyogenes |
description |
Four Hereford heifers of approximately 18 months of age presented nodular formations in the uterus detected by transrectal palpation. This pathology had been previously diagnosed in the herd, which led to the early discarding of 1-2% of heifers per year. Post mortem examination in a severely affected heifer revealed multiple abscesses in the pelvic and abdominal cavity associated with the uterus, serosa of the forelimbs, and liver. Microscopically, the abscesses were characterized by a necrotic center with viable and degenerated neutrophils and necrotic debris, surrounded by a well-defined wall of connective tissue. In addition, multifocal neutrophilic ruminitis associated with acidosis was observed. Intralesional gram-positive bacilli were detected in the abscesses. Trueperella pyogenes was isolated from the purulent content. It is assumed that rumen acidosis was the origin of the dissemination and abscess formation of T. pyogenes in various tissues, including the uterus. |
publisher |
Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria |
publishDate |
2023 |
url |
https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/24196 |
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