Presumptive diagnosis of gastrointestinal pythiosis in a dog with pyloric obstruction

Case report

Authors

  • Adrya Hardt Faria dos Santos Universidade Federal do Paraná
  • Aline Schereiber Cruz Universidade Federal do Paraná https://orcid.org/0009-0003-4075-7040
  • Gabriellye Tavares de Abreu Universidade Federal do Paraná
  • Gustavo Junqueira Salles Universidade Federal do Paraná
  • Vitoria Maria Albano Pasqual Universidade Federal do Paraná https://orcid.org/0000-0001-7723-7864
  • Tilde Rodrigues Froes Universidade Federal do Paraná

DOI:

https://doi.org/10.31533/pubvet.v19n11e1862

Keywords:

Dogs, gastric lesion, Pythium insidiosum

Abstract

Pythiosis is a pyogranulomatous disease caused by a pseudofungus known as Pythium insidiosum, which predominantly affects horses; in dogs it occurs less frequently, although occasional cases have also been reported in other species. In dogs, the cutaneous form is the most commonly described; however, the gastrointestinal tract may also be affected, as presented in the current case report. A two-year-old female French Bulldog was examined due to bouts of vomiting. Abdominal ultrasonography revealed marked thickening of the gastric wall, loss of wall layering, and pyloric obstruction. Considering that the animal lived on a rural property with flooded areas, gastric pythiosis was suspected. Despite the recommendation for gastric biopsy, due to the unfavorable prognosis, the owners opted for euthanasia. Histopathological examination suggested infection.

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Published

2025-11-30

Issue

Section

Medicina veterinária

How to Cite

1.
Hardt Faria dos Santos A, Schereiber Cruz A, Tavares de Abreu G, Junqueira Salles G, Albano Pasqual VM, Froes TR. Presumptive diagnosis of gastrointestinal pythiosis in a dog with pyloric obstruction: Case report. Pubvet [Internet]. 2025 Nov. 30 [cited 2026 Oct. 20];19(11):e1862. Available from: https://ojs.pubvet.com.br/index.php/revista/article/view/4362