Medical Dictionary

pyelovenous backflow

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noun py·elo·ve·nous back·flow \-ˈvē-nəs-ˈbak-ˌflō\

Medical Definition of pyelovenous backflow

  1. :  drainage of fluid from the renal pelvis of a kidney into the renal venous system under certain conditions (as in retrograde pyelography) in which abnormal amounts of pressure occur in a direction opposite to normal—called also pyelovenous reflux


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