Peer-reviewed veterinary case report
Cat surgery to fix blocked ureter causing kidney swelling
By B.E. Somacal et al.·Published in Arquivo Brasileiro de Medicina Veterinária e Zootecnia·2026·View original on DOAJ →
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Original publication title: Microsurgery of resection and anastomosis of a circumcaval ureter with focal stenosis in a feline: case report
- Species:
- cat
Plain-English summary
A 3-year-old cat with severe swelling in the right kidney was diagnosed with a rare condition called circumcaval ureter, which caused a blockage in the urinary tract. The veterinarian performed a delicate surgery to remove the blocked section of the ureter and reconnect it. After the surgery, imaging showed that the swelling in the ureter decreased, but unfortunately, the right kidney had already lost its function and had to be removed. The cat's condition was managed with careful monitoring and treatment following the surgery.
People also search for: cat kidney swelling treatment · circumcaval ureter in cats · cat kidney surgery recovery
Abstract
ABSTRACT The circumcaval ureter, a rare venous anomaly, results from abnormal embryonic development of the posterior cardinal vein and often leads to ureteral obstruction and hydronephrosis, particularly in felines. This case report aims to describe a microsurgical resection and ureteral anastomosis performed on a feline with circumcaval ureteral stenosis causing focal obstruction and severe right hydronephrosis. The methodology involved ultrasonographic diagnosis, preoperative stabilization with medical therapy, and a high-precision surgical intervention under microscopy to excise the stenotic segment and restore ureteral continuity. Postoperative evaluations included imaging and hematologic monitoring, revealing a progressive reduction in ureteral dilation but irreversible loss of right kidney function, necessitating a nephrectomy. This work highlights the technical challenges and potential outcomes of microsurgical management of ureteral anomalies in small animals.
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Search related cases →Original publication on DOAJ: https://doi.org/10.1590/1678-4162-13548