{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T03:42:11Z","timestamp":1780544531625,"version":"3.54.1"},"reference-count":22,"publisher":"Wiley","issue":"1-2","license":[{"start":{"date-parts":[[2024,10,12]],"date-time":"2024-10-12T00:00:00Z","timestamp":1728691200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Aust Veterinary J"],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:p><jats:italic>Nocardia<\/jats:italic> infections in cats most commonly present as subcutaneous wounds, or less commonly, as pneumonia, purulent pleurisy and disseminated disease. Abdominal involvement is rarely reported, and to date, localised retroperitoneal infection has only been reported in people. This report describes a five\u2010year\u2010old domestic shorthair cat living in Canberra, Australia, that presented with a two\u2010month history of pyrexia and inappetence progressing to anorexia. Ultrasonography showed a large retroperitoneal mass incorporating both ureters. Euthanasia was elected because of the guarded prognosis. Necropsy examination revealed the mass to be comprised of extensive pyogranulomatous inflammation with fibrosis, Splendore\u2013Hoeppli phenomenon and filamentous Gram\u2010positive bacteria. Culture and MALDI\u2010TOF mass spectrometry identified the causative agent as <jats:italic>Nocardia brasiliensis<\/jats:italic>. <jats:italic>N.\u2009brasiliensis<\/jats:italic> is commonly diagnosed as a cause of cutaneous nocardiosis in Australian human patients, but to date has only been reported in one cat from the United States and one dog from Australia. A treatment approach that might have been used in such a case is provided even though the cat's owners elected not to proceed with surgical intervention.<\/jats:p>","DOI":"10.1111\/avj.13383","type":"journal-article","created":{"date-parts":[[2024,10,12]],"date-time":"2024-10-12T12:08:56Z","timestamp":1728734936000},"page":"27-32","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Retroperitoneal granuloma in a cat caused by <i>Nocardia brasiliensis<\/i> resulting in bilateral ureteral entrapment and unilateral hydronephrosis"],"prefix":"10.1111","volume":"103","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-1176-3795","authenticated-orcid":false,"given":"K","family":"Lee","sequence":"first","affiliation":[{"name":"Sydney School of Veterinary Science The University of Sydney  Sydney New South Wales 2006 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