Peer-reviewed veterinary case report
Neoplasia of the equine urinary bladder as a cause of hematuria.
- Journal:
- Journal of the American Veterinary Medical Association
- Year:
- 1985
- Authors:
- Fischer, A T et al.
- Species:
- horse
Plain-English summary
In a study involving six horses with tumors in their urinary bladders, common signs included a noticeable mass in the bladder, low red blood cell counts (anemia), blood in the urine (hematuria), and protein in the urine (proteinuria). The most frequently found tumor was squamous cell carcinoma, identified in four of the horses, while one horse had a transitional cell carcinoma and another had a fibromatous polyp. Most of the horses were older than 10 years. One mare received treatment that helped reduce the bleeding from the bladder mass and seemed to keep the mass from growing, but she eventually died due to cancer spreading to her abdomen. This study suggests that while rare, bladder tumors should be considered in horses that have blood in their urine.
Abstract
In 6 horses with urinary bladder neoplasms, common clinical findings included a palpable mass in the bladder, anemia, hematuria, and/or proteinuria. Squamous cell carcinoma was found in 4 horses and appears to be the most common bladder tumor in the horse. Single cases of transitional cell carcinoma and fibromatous polyp also were identified. All horses except one were over 10 years of age. In one mare, treatment with 5-fluorouracil intracystically resulted in decreased bleeding from the bladder mass and apparent stabilization of the mass size. The mare ultimately died because of abdominal metastasis. Although rare, neoplasia of the urinary bladder should be considered when evaluating horses with hematuria.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/4019287/