. The alimentary tract : a radiographic study . Fig. 31-. Fig. 32. Fig. 31. Marked case of gastroptosis—the tubular form is main-tained, j y Fig. 32. Radiogram of a typical case of chronic pyloric obstruc-tion, Type 1. The plate was taken 48 hours after the food was given,and the bismuth is seen lying about 5 inches below the level of theumbilicus. None of the food appears to have reached the caecum. Alittle more food has been given and can be seen sliding down between the collapsed walls. Face page 6k Pyloric obstruction 65 discussed the question of the rate of emptying of the stomachand the


. The alimentary tract : a radiographic study . Fig. 31-. Fig. 32. Fig. 31. Marked case of gastroptosis—the tubular form is main-tained, j y Fig. 32. Radiogram of a typical case of chronic pyloric obstruc-tion, Type 1. The plate was taken 48 hours after the food was given,and the bismuth is seen lying about 5 inches below the level of theumbilicus. None of the food appears to have reached the caecum. Alittle more food has been given and can be seen sliding down between the collapsed walls. Face page 6k Pyloric obstruction 65 discussed the question of the rate of emptying of the stomachand the lines on which this subject can be investigated. It seems impossible at present, even with detailed notes ofmany cases before me, to analyse with certainty the variousstages, as I have done in the case of oesophageal obstruction—the part that loss of tonic action plays is so difficult todetermine. In the large majority the loss of tone is a markedfeature, but in a small number perfect tonic action persistsin spite of the most striking retention, har


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