. Radiography, x-ray therapeutics and radium therapy . the time whenthe food is engaging in the pylorus, a small streak of the bismuth is occasion-ally, seen entering and passing through the narrow canal. It may remainfor an appreciable time in the stricture. Pseudo Contractions of the Stomach.—Hhese are the result apparently ofvarious neuroses that produce a contraction of the greater curvature. Adeep infolding of the greater curvature of the stomach is the result of thesecontractions. Atropine given hyperdermically frequently aids in clearingup the diagnosis. This type must be differentiated
. Radiography, x-ray therapeutics and radium therapy . the time whenthe food is engaging in the pylorus, a small streak of the bismuth is occasion-ally, seen entering and passing through the narrow canal. It may remainfor an appreciable time in the stricture. Pseudo Contractions of the Stomach.—Hhese are the result apparently ofvarious neuroses that produce a contraction of the greater curvature. Adeep infolding of the greater curvature of the stomach is the result of thesecontractions. Atropine given hyperdermically frequently aids in clearingup the diagnosis. This type must be differentiated from the intermittenthour-glass contraction of the stomach as well as from the benign and malig-nant hour-glass contraction. Intermittent Hour-glass Contraction.—This may simulate in every detailthe true hour-glass contraction. It may take the form of a contraction in 15 Fig. 170.—Diagram to represent a condition metwith iu examination of the stomach. This istypical of atony of the stomach walls secondaryto pyloric obstruction. 226 RADIOGKAPHY. the middle of the stomach, with apparently two equal portions ; or the uppersegment may contain all the meal with the magenblase well marked greater curvature shows a marked depression in other cases. There is no retardation ofmotility, and there maybe even an increasedrapidity of emptying, theadministration of atro-pine leading to no changein the condition. Suchcases require to be ex-amined on more than oneoccasion before an accu-rate diagnosis can bemade. There is neverany residue after sixhours. The normalstomach picture will beobtained on one examination, and the hour-glass contraction at anothertime. The appearance of hour-glass contraction may be reproduced in thesame patient on more than one occasion. It is possible that the conditionof the colon, bound by adhesions, may be an explanation of the Hour-glass Contraction.—There are three varieties met with :(1) Congenital; (2) Non-malignant; (3) Ma
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