#pyelonephritis  inflammation of the kidney and its pelvis caused by bacterial infection
  supertype:  #urinary_tract_infection__urinarytractinfection  any infection of any of the organs of the urinary tract
  subtype:  #acute_pyelonephritis  pyelonephritis resulting from the spread of a bladder infection
  subtype:  #chronic_pyelonephritis  pyelonephritis that develops slowly and can lead to renal failure if untreated; often associated with a kidney stone or with narrowing of the urinary passageways

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