#reflux  an abnormal backward flow of body fluids
  supertype:  pathology  any deviation from a healthy or normal condition
  subtype:  gastroesophageal_reflux__esophageal_reflux__oesophageal_reflux__oesophagealreflux  reflux of stomach contents into the esophagus
  subtype:  hepatojugular_reflux__hepatojugularreflux  a venous reflux occurring in congestive heart failure
  subtype:  ureterorenal_reflux  a backflow of urine from the ureter into the renal pelvis
  subtype:  vesicoureteral_reflux  a backflow of urine from the bladder into the ureter

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