200 bytes added ,  18:57, 21 February 2011
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*Can be congenital or acquired.
 
*Can be congenital or acquired.
 
**Congenital cysts are common incidental findings in both pigs and calves. Simple cysts generally cause no problems verses polycystic kidneys which can disrupt the renal architecture and lead to compromised function.  Persian cats and Cairn terriers are predisposed.
 
**Congenital cysts are common incidental findings in both pigs and calves. Simple cysts generally cause no problems verses polycystic kidneys which can disrupt the renal architecture and lead to compromised function.  Persian cats and Cairn terriers are predisposed.
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*** Kidney nephrons and collecting ducts have different embryological origins.
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*** If their connection fails to develop during development, polycycstic disease may result (especially common in cats).
 
**Acquired cysts can occur as a sequel to chronic renal disease involving interstitial fibrosis.
 
**Acquired cysts can occur as a sequel to chronic renal disease involving interstitial fibrosis.
  
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