. Roentgen interpretation; a manual for students and practitioners . ncisurse opposite the active edge. They may cause irregularity ofthe greater curvature from contraction of scar tissue which extendsout around the body of the stomach. If they occur at the pylorusthere is failure of the antrum to contract and stasis is marked. The 176 GASTRO-INTESTINAL TRACT first swallow of barium may collect in a small pool at the site of thelesion due to the slight spasm which holds up its progress at firstbut which disappears as the stomach fills. Penetrating ulcers have all the signs of the indurated for
. Roentgen interpretation; a manual for students and practitioners . ncisurse opposite the active edge. They may cause irregularity ofthe greater curvature from contraction of scar tissue which extendsout around the body of the stomach. If they occur at the pylorusthere is failure of the antrum to contract and stasis is marked. The 176 GASTRO-INTESTINAL TRACT first swallow of barium may collect in a small pool at the site of thelesion due to the slight spasm which holds up its progress at firstbut which disappears as the stomach fills. Penetrating ulcers have all the signs of the indurated form and,in addition, a mass of barium projecting from the rigid area whichcorresponds in size and shape with the crater of the lesion. Althoughthey are often found on the posterior wall surgically, they usuallyappear on the lesser, curvature during the roentgen lateral ^iew may at times be necessary to adequately visualizethese lesions and should be a part of the routine examination whichas a matter of fact should include careful observation from every. Fig. 157-—Free gas between the upper surface of the liver and the diaphragmfollowing perforation of a duodenal ulcer. angle in at least three positions—prone, supine or standing. Theseprotrusions must be differentiated from the duodenojejunal flexurewhich is often projected just above the lesser cur\ature. Rotationof the patient and deep inspiration will usuall}^ enable one to deter-mine whether or not the mass is actually projecting from the gastricshadow or is independent of it. Perforating ulcer shows, in addition to the signs of a penetratingulcer, the presence of a gas bubble outside the stomach wall abovethe mass in the crater. Syphilis.—Its radiographic appearance is practically that of car-cinoma except that mottling of the barium mass and stasis are STOMACH 111. uncommon. The extent of the lesion is out of proportion to thepatients s}Tnptoms. The age of the patient, the history and thelaboratory findin
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