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Ureteral obstruction due to mast cell tumor
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The first description of a mast cell tumor in this location! And although the neoplasia was poorly differentiated it showed no evidence of recurrence or dissemination of the tumor after surgical resection.
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A 6-year-old, castrated male, mixed-breed dog was diagnosed with partial unilateral ureteral obstruction secondary to a ureteral mass.
The ureteral mass was surgically resected, and an ureteroneocystostomy was performed.
Histopathology of the ureteral mass was consistent with a poorly differentiated mast cell tumor (MCT).
The patient recovered well but was euthanized 5 months postoperatively for central nervous system signs.
A choroid plexus tumor was diagnosed during necropsy examination.
There was no evidence of recurrence or dissemination of the ureteral MCT. Extracutaneous MCTs are rare in dogs, and primary MCT associated with the urinary tract has not previously been reported in the veterinary literature.
Source: Michele Steffey, Kenneth M. Rassnick, Brian Porter, Bradley L. Njaa (2004): Ureteral Mast Cell Tumor in a Dog. In: Journal of the American Animal Hospital Association 40:82-85 (2004)
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25th FECAVA EuroCongress 4-9 September 2019, St. Petersburg / RussiaESVN-ECVN Symposium 2018ESAVSVetAgendaLab in Practice - Clinical PathologyEuropean Master of Small Animal Veterinary MedicineSEVC 2014ESAVS - Neuropathology & MRICongressMed 2014ACVIM 2014VetContact
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