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http://dx.doi.org/10.2460/javma.246.4.411 | DOI Listing |
J Vet Diagn Invest
July 2024
Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA.
Canine schistosomiasis caused by can lead to severe morbidity and eventual mortality, in part due to the deposition of fluke ova in the liver and gastrointestinal tract, which promotes an influx of peri-ova inflammatory cells. Although fluke eggs can be identified in H&E-stained histologic sections, cases exist in which only fragments of the ova persist, or the egg is obscured by inflammatory infiltrates, which can confound definitive histologic diagnosis. Unfortunately, antibodies specific to are not commercially available for immunohistochemical labeling.
View Article and Find Full Text PDFVet Clin North Am Small Anim Pract
November 2022
Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A & M University, College Station, MS 4474, College Station, TX 77843-4474, USA. Electronic address:
Canine schistosomiasis is a well-established cause of a granulomatous enteropathy and hepatopathy in dogs. In a small subset of patients, infection triggers significant hypercalcemia. Clinical signs and clinicopathologic findings are fairly nonspecific but ultrasonographic evidence of heterogenous small intestinal wall layering and pin-point hyperechoic foci in bowel, nodes, and liver is highly suggestive of infection.
View Article and Find Full Text PDFJ Vet Intern Med
May 2021
Department of Clinical Sciences, College of Veterinary Medicine, Texas A&M University, College Station, Texas, USA.
Background: The trematode Heterobilharzia americana (HA) causes granulomatous gastrointestinal and hepatic disease in dogs. Before 2008, diagnosis relied on saline fecal sedimentation or histopathology, and earlier reports primarily described dogs with advanced disease or cases diagnosed incidentally at necropsy. The advent of a fecal PCR test has facilitated the diagnosis of HA and provided insights into manifestations and response to treatment.
View Article and Find Full Text PDFVet Parasitol Reg Stud Reports
January 2021
Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Mailstop 4467, Texas A&M University, College Station, TX 77843-4467, United States of America. Electronic address:
Heterobilharzia americana is a trematode parasite (family: Schistosomatidae) of mammalian wildlife that occasionally infects domestic dogs and horses in the southeastern United States. This report presents the first case of H. americana infection in a Grant's zebra (Equus burchelli boehmi).
View Article and Find Full Text PDFVet Radiol Ultrasound
September 2020
Diagnostic Imaging, Gulf Coast Veterinary Specialists, Houston, Texas.
Canine schistosomiasis, caused by the trematode Heterobilharzia americana, can pose a diagnostic challenge due to nonspecific symptoms. The aim of this multicenter, retrospective, descriptive study was to compare the prevalence and extent of sonographic changes associated with schistosomiasis between affected and infection-free dogs. Medical records of two referral centers were searched for dogs with confirmed schistosomiasis that had undergone an abdominal ultrasound.
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