Peer-reviewed veterinary case report
Dog with long-term constipation and rectal inflammation
By Black, Annalise et al.·Published in Frontiers in veterinary science·2024·Department of Pathology & Microbiology, United States·View original on PubMed →
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Original publication title: Case report: Localized coloproctitis caused by novelin a dog.
- Species:
- dog
Plain-English summary
A 6-year-old male neutered boxer mix was brought to the vet after struggling with painful bowel movements, blood in his stool, and constipation for a month. Despite trying several treatments, including a special diet, antibiotics, and anti-inflammatory medications over 3.5 months, his condition worsened, leading to severe inflammation and draining sores around his rear. Unfortunately, the dog was humanely euthanized, and further examination revealed a rare fungal infection causing the severe bowel issues. This case highlights a unique cause of gastrointestinal problems in dogs that may not respond to standard treatments.
People also search for: dog blood in stool · boxer mix constipation treatment · dog bowel movement problems · dog fungal infection symptoms
Abstract
A 6-year-old male neutered boxer mix canine was presented for a one-month history of dyschezia, hematochezia, and constipation. Colonoscopy and endoscopic biopsies revealed non-specific lymphoplasmacytic, eosinophilic colitis. Despite pursuing various therapies over a 3.5-month clinical course (including hypoallergenic diet, antibiotics, prokinetics, laxatives, and anti-inflammatory glucocorticoids), the patient's condition did not improve. Two and a half months after initial presentation, the patient developed circumferential proctitis with multiple draining tracts and obstipation. Humane euthanasia and postmortem examination were elected. Gross and histological findings revealed locally extensive pyogranulomatous coloproctitis with many intralesional PAS-positive, GMS-negative 30-40 μm in diameter, hyaline, pauciseptate, irregularly branching fungal hyphae, hyphal bodies or chlamydospores and 25-45 μm in diameter thick-walled zygospores. Fungal culture of fluid from the draining tracts was performed, and DNA sequence analysis of the ITS and partial LSU of the nuclear ribosomal RNA genes were used to identify and confirm a novel species,.spp. are saprobes in the order Basidiobolales and most commonly cause granulomatous infections of the skin, respiratory tract, and gastrointestinal tract in veterinary species and humans. To the authors' knowledge, this is the first report of novelcausing localized coloproctitis in a dog.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/39318603/