Unilateral renal torsion in a lamb

Document Type : Case report


1 Department of Internal Medicine and Clinical Pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

2 Department of internal medicine and clinical pathology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

3 Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Iran

4 : Faculty of Veterinary Medicine, Urmia University


In ruminant, the kidneys are a major excretory organ that eliminate metabolic byproducts and regulate water-electrolyte homeostasis and maintain acid-base balance in the body. Therefore, kidney abnormalities cause a life-threatening effect on ruminants’ health. Renal torsion has not been reported in any animal species. In the present report, a case of a two-month-old male lamb that has unilateral renal torsion has been described. In necropsy, the twisted left kidney was severely congested and was enlarged in size. Histopathological studies revealed renal tubular and glomeruli necrosis. Vascular changes consisted of congestion and thrombi in the blood vessels. Abnormalities in the embryonic developmental period and increased mobility of the renal structure due to ligaments associated with a twisted kidney are suspected causes of the occurrence of renal torsion.


Main Subjects

1.    König HE, Bragulla H, Hans-Georg HG. Veterinary anatomy of domestic mammals: textbook and colour atlas. Schattauer Verlag; 2007.
2.    Ebrahimi M A.Veterinary basic anatomy.1th ed. Sotodeh; 2011; 183-185.
3.    Skotnicka E, Muszczyñski Z, Dudzinska W, Suska M. A review of the renal system and diurnal variations of renal activity in livestock. Irish Veterinary Journal. 2007; 60(3):1-8.
4.    Hsiao WC, Abt P, Amaral S, Levine M, LaRosa C. Late renal allograft torsion in a pediatric transplant recipient. Pediatric Transplantation. 2021:e14210.
5.    Vincenzi P, Sivan S, Shah R, Goggins MO, Morsi M. Recurrent renal allograft torsion after simultaneous kidney and pancreas transplantation: is it still possible to salvage the graft? A case report. In Transplantation proceedings. 2021; (53): 2529-2535.
6.    Sofue K, Vikraman DS, Jaffe TA, Chaubal GN, Bashir MR. Graft kidney torsion after simultaneous kidney-pancreas transplant: report of 2 cases and literature review. Journal of Computer Assisted Tomography. 2015; 39(4): 506-9.
7.    Wong-You-Cheong JJ, Grumbach K, Krebs TL, Pace ME, Daly B, Chow CC, et al. Torsion of intraperitoneal renal transplants: imaging appearances. AJR. American Journal of Roentgenology. 1998; 171(5):1355-9.
8.    Gutknecht M. Sonography in the diagnosis of renal transplant torsion. Journal of Diagnostic Medical Sonography. 2009; 25(5):231-8.
9.    Klahr S. New insights into the consequences and mechanisms of renal impairment in obstructive nephropathy. American Journal of Kidney Diseases. 1991; 18(6):689-99.
10.    Klahr S, Purkerson ML. The pathophysiology of obstructive nephropathy: the role of vasoactive compounds in the hemodynamic and structural abnormalities of the obstructed kidney. American Journal of Kidney Diseases. 1994; 23(2):219-23.
11.    Moriyama T, Kawada N, Nagatoya K, Horio M, Imai E, Hori M. Oxidative stress in tubulointerstitial injury: therapeutic potential of antioxidants towards interstitial fibrosis. Nephrology Dialysis Transplantation. 2000; 15(suppl_6):47-9.
12.    Zhou Z, Kang YJ. Cellular and subcellular localization of catalase in the heart of transgenic mice. Journal of Histochemistry & Cytochemistry. 2000; 48(5):585-94.
Volume 14, Issue 1 - Serial Number 26
This issue XML file is being prepared.
April 2022
Pages 50-53
  • Receive Date: 05 January 2022
  • Revise Date: 12 March 2022
  • Accept Date: 18 March 2022
  • First Publish Date: 01 April 2022