. Radiography and radio-therapeutics . omach, the most com-mon situations being the cardiac orifice, the pylorus, with the adjoiningstomach wall, and the lesser curvature of the body of the stomach. Thecharacteristic appearance is that of a stomach shadow more or less raggedand irregular in a part of its extent, with generally a delay in the passage ofthe food : masses of the growth project into the shadow of the opaque food,and so cause irregularities of the shadow. All cases examined which showirregularity should be re-examined in order to confirm the diagnosis. 23 354 KADIOGBAPHY Welch anal
. Radiography and radio-therapeutics . omach, the most com-mon situations being the cardiac orifice, the pylorus, with the adjoiningstomach wall, and the lesser curvature of the body of the stomach. Thecharacteristic appearance is that of a stomach shadow more or less raggedand irregular in a part of its extent, with generally a delay in the passage ofthe food : masses of the growth project into the shadow of the opaque food,and so cause irregularities of the shadow. All cases examined which showirregularity should be re-examined in order to confirm the diagnosis. 23 354 KADIOGBAPHY Welch analysed 1300 cases in which the distribution was as follows:pyloric region, 791 ; lesser curvature, 148 ; cardiac, 104; posterior wall,68 ; the whole or greater part of the stomach, 61 ; multiple tumours, 45 ;greater curvature, 34 ; anterior wall, 30 ; fundus, 19. The diagnosis by X-rays enables us to ascertain : (1) The presence of atumour, (2) position and size ofthe stomach, (3) situation of thetumour, and its relation to Fig. 301.—Illustrating the appearances seenin carcinoma at pyloric end of shaded area represents the tumour. 1 2 302.—Situations of tumour in the stomach. (1) Tumour situated near the cardiac end of thestomach. The stomach in this case contained bismuthfood twenty-four hours after ingestion. There wasno pyloric obstruction found at the operation. (2) Large carcinoma involving lesser stomach emptied rapidly in this case. A largetumour was found converting the lumen of thestomach into a funnel-shaped channel. Position of the Tumour.—When situated in the pyloric portion there maybe decided evidence of a narrowing of the pyloric canal, accompanied by dilatation and tortuosity of that partof the stomach. In rare instances anirregular outline of the tumour maybe shown. The position of the stomachis generally higher in the abdomenthan in the case of pyloric obstructiondue to chronic ulcer. As referred toelsewhere, the deg
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