Article Text

Hydronephrosis and ureteral duplication in a young alpaca
  1. M. Cardwell, MA, VetMB, MRCVS1,1 and
  2. M. H. Thorne, BVSc, MRCVS2
  1. 1 The Woolpack Surgery, London Road, Reed, Royston SG8 8BB
  2. 2 Department of Clinical Veterinary Medicine, Madingley Road, Cambridge CB3 OES


A seven-month-old male alpaca (Lama pacos) with signs of abdominal straining was examined. A fluid-filled structure was palpable in the mid-abdominal region, and ultrasonography revealed a hydronephrosis of the right kidney, with an associated mega-ureter. The affected kidney was removed and the clinical signs resolved. Histological examination of the kidney revealed the unusual congenital abnormality of ureteral duplication. It is suggested that the hydronephrosis developed as a result of this underlying condition.

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  • Miss Cardwell's present address is 70 Mill Road, Royston SG8 7AJ

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