title: Unilateral improvement in glomerular filtration rate after permanent drainage of a perinephric pseudocyst in a cat.
abstract: A 12-year-old, 6 kg, castrated male Siamese-cross cat was referred for investigation of an abdominal mass. The cat was found to have a left perinephric pseudocyst (PNP), accompanied by azotemia, with a small right kidney detected on ultrasound. Glomerular filtration rate (GFR) was determined by renal scintigraphy and was found to be low, with the left kidney contributing 64% of the total GFR. Percutaneous ultrasound-guided drainage of the PNP did not improve the GFR, and fluid reaccumulated within a short period of time. Laparoscopic fenestration of the cyst capsule was performed to allow for permanent drainage. The PNP did not recur, renal values progressively improved, and 8 months after the capsulotomy the GFR of the left kidney had increased by 50%, while renal function remained static on the right side.
authors.affiliation: Veterinary Specialists of Northern Colorado, Loveland, CO 80538, USA.
authors.forename: Kelly
authors.initials: K
authors.lastname: McCord
authors.forename: Philip F
authors.initials: PF
authors.lastname: Steyn
authors.forename: Katharine F
authors.initials: KF
authors.lastname: Lunn
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D002415:Cats; D004322:Drainage / Q000662:veterinary*; D005919:Glomerular Filtration Rate / Q000662:veterinary*; D052177:Kidney Diseases, Cystic / Q000601:surgery / Q000662:veterinary*; D008297:Male; D011877:Radionuclide Imaging / Q000662:veterinary; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional / Q000662:veterinary