What is your diagnosis? Lymphoma of the urinary bladder.

Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610, USA.
Journal of the American Veterinary Medical Association (Impact Factor: 1.67). 02/2010; 236(3):291-2. DOI: 10.2460/javma.236.3.291
Source: PubMed
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    ABSTRACT: Three dogs and one cat with lymphoma affecting the urinary bladder are reported and the findings on abdominal radiographs and ultrasound are described. Mural lesions representing lymphoma affecting the urinary bladder were identified ultrasonographically in all animals. The most common complications associated with urinary bladder lymphoma were hydronephrosis and hydroureter. In two patients contrast radiography was necessary to detect leakage of urine in the peritoneal and retroperitoneal space. The radiographic and ultrasonographic signs were similar to those reported with other urinary bladder neoplasms; hence urinary bladder lymphoma could not be distinguished from the more common urinary bladder neoplasms, such as transitional cell carcinoma. It is important to include lymphoma in the differential diagnosis of urinary bladder wall thickening and mural mass in dogs and cats.
    Veterinary Radiology &amp Ultrasound 10/2006; 47(6):592-6. DOI:10.1111/j.1740-8261.2006.00192.x · 1.26 Impact Factor
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    ABSTRACT: Urinary bladder neoplasms were diagnosed in 20 cats during an eight-year period. Histologic types included angioma, intravenous leiomyoma, adenocarcinoma, squamous cell carcinoma, transitional cell carcinoma, leiomyosarcoma, haemangiosarcoma, lymphoma, and embryonal rhabdomyosarcoma. Malignant neoplasms (18/20; 90 per cent) and malignant epithelial neoplasms (12/20; 60 per cent) predominated. Adenocarcinomas and squamous cell carcinomas were almost as common as transitional cell carcinomas. All adenocarcinomas and most transitional cell carcinomas were exophytic, in contrast to all squamous cell carcinomas and most sarcomas which were endophytic. Metaplastic, hyperplastic, and in situ changes in the adjoining mucosa of the bladder were seen commonly in the cases of epithelial neoplasms; Brunn's nests were associated more with the adenocarcinomas than with the other epithelial tumours.
    Journal of Small Animal Practice 06/2008; 27(7):433 - 445. DOI:10.1111/j.1748-5827.1986.tb03961.x · 0.91 Impact Factor