. Radiography and radio-therapeutics . h, 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 KADIOGRAPHY Welch analysed
. Radiography and radio-therapeutics . h, 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 KADIOGRAPHY 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. 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 301.—Illustrating the appearances seen The stomach emptied rapidly in this case. A large in carcinoma at pyloric end of stomach. tumour was found converting the lumen of theThe shaded area represents the tumour. stomach 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 part J X/ V. / of the stomach. In rare instances an I > ^rx / irregular outline of the tumour may r—^ j^ /Narrow ^^ shown. The position of the stomach Corpus
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