PMID- 18262454 OWN - NLM STAT- MEDLINE DCOM- 20081104 LR - 20080609 IS - 1098-612X (Print) IS - 1098-612X (Linking) VI - 10 IP - 3 DP - 2008 Jul TI - Resolution of renal adenocarcinoma-induced secondary inappropriate polycythaemia after nephrectomy in two cats. PG - 264-8 LID - 10.1016/j.jfms.2007.11.006 [doi] AB - Two cases of secondary, inappropriate polycythaemia caused by renal adenocarcinoma in domestic shorthair cats, are described. The cats were 9 and 12 years old and both were presented because of generalised seizures presumably due to hyperviscosity. Both cats had a markedly increased haematocrit (0.770 and 0.632 l/l) and thrombocytosis (744 x 10(9)/l and 926 x 10(9)/l). An abdominal ultrasound revealed a mass in the cranial pole of one kidney in both cats. Serum erythropoietin (EPO) concentration was within the reference interval (RI) in both cats but was inappropriately high considering the markedly increased haematocrit. The cats were initially stabilised and managed by multiple phlebotomies and intravenous fluid therapy and underwent nephrectomy of the affected kidney later on. Both the polycythaemia and thrombocytosis resolved following surgery. Postoperative serum EPO concentration, measured in one cat, decreased markedly. Histopathology of the affected kidneys confirmed a diagnosis of renal adenocarcinoma. Both cats were stable for an 8-month follow-up period; however, one cat had developed a stable chronic kidney disease (CKD), while the other was represented 8 months postoperatively due to dyspnoea, and had radiographic evidence of lung metastasis, presumably because of the spread of the original renal tumour and was euthanased. Initial stabilisation of polycythaemic cats should include multiple phlebotomies. Nephrectomy should be considered in cats with secondary, inappropriate, renal adenocarcinoma-related polycythaemia when only one kidney is affected by the tumour, and provided that the other kidney's function is satisfactory. Nephrectomy should be expected to resolve the polycythaemia and lead to normalisation of serum EPO concentration. FAU - Klainbart, Sigal AU - Klainbart S AD - Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel. FAU - Segev, Gilad AU - Segev G FAU - Loeb, Emmanuel AU - Loeb E FAU - Melamed, Dana AU - Melamed D FAU - Aroch, Itamar AU - Aroch I LA - eng PT - Case Reports PT - Journal Article DEP - 20080208 PL - England TA - J Feline Med Surg JT - Journal of feline medicine and surgery JID - 100897329 SB - IM MH - Animals MH - Carcinoma, Renal Cell/surgery/*veterinary MH - Cat Diseases/*pathology/*surgery MH - Cats MH - Female MH - Kidney Failure, Chronic/veterinary MH - Kidney Neoplasms/surgery/*veterinary MH - Nephrectomy/adverse effects/*veterinary MH - Polycythemia/etiology/*veterinary EDAT- 2008/02/12 09:00 MHDA- 2008/11/05 09:00 CRDT- 2008/02/12 09:00 PHST- 2007/11/26 00:00 [accepted] PHST- 2008/02/12 09:00 [pubmed] PHST- 2008/11/05 09:00 [medline] PHST- 2008/02/12 09:00 [entrez] AID - S1098-612X(07)00214-8 [pii] AID - 10.1016/j.jfms.2007.11.006 [doi] PST - ppublish SO - J Feline Med Surg. 2008 Jul;10(3):264-8. doi: 10.1016/j.jfms.2007.11.006. Epub 2008 Feb 8.