the resting pressure in the lower esophageal sphincter was found to be slightly reduced in 50 per cent of those examined , while 100 per cent showed a slightly reduced contraction amplitude in the distal tubular esophagus which became progressively lower in the distal direction , and a pathological gastro-esophageal reflux was observed in 57 per cent .
C0014876
esophagus
C0017168
gastro-esophageal reflux