. Roentgen interpretation; a manual for students and practitioners . Fig. 137.—Tracing of stomach, showing penetrating ulcer of lesser curvature. Patient prone. of the stomach wall, which is often a difficult matter to spasms usually are transitory so that repeated observa-tions of the patient will frequently settle the matter. Antispas-modics, such as belladonna or papaverin, may be emploj^ed, butthey are not conclusive because of the fact that at times they relaxthe spasm associated with a lesion of the wall as readily as thosedue to functional causes; so that the question
. Roentgen interpretation; a manual for students and practitioners . Fig. 137.—Tracing of stomach, showing penetrating ulcer of lesser curvature. Patient prone. of the stomach wall, which is often a difficult matter to spasms usually are transitory so that repeated observa-tions of the patient will frequently settle the matter. Antispas-modics, such as belladonna or papaverin, may be emploj^ed, butthey are not conclusive because of the fact that at times they relaxthe spasm associated with a lesion of the wall as readily as thosedue to functional causes; so that the question of the presence or11 162 GASTRO-INTESTINAL TRACT absence of a lesion must depend upon other evidence than that ofspasm. (2) As a result of gastric lesions. Under this headingcome the contracted, rigid, smooth lesser curvatures with absenceof peristalsis seen in ulcer and carcinoma; the presence of thecrater of a penetrating or perforating ulcer projecting from the gas-tric outline on the lesser curvature or posterior wall; marked. Fig. 138.—Stomach sho-wing penetrating ulcer of lesser curvature. Patient standing. irregularities of carcinoma which vary according to the size, shapeand position of the tumor. These deformities are usually eitherannular or due to the presence of irregular masses invading thebarium mixture, leaving ragged holes or markings suggesting fingerprints. We may also have the local contractions due to an ulcerwith its associated spasm; or the extensive defects of lues, suggest- STOMACH 163 ing ulcer or carcinoma. Another deformity is that which occursas the result of contraction of scar tissue in the gastric wall, produc-ing a so-called hour-glass stomach. This deformity is constant inall positions. (3) Defects due to extragastric causes such as tumorsor pressure as, for example, the gall-bladder which produces arounded depression in the region of the pylorus, or pancreatic tumorswhich cause irregularity of the greater or lesser curvature, are not
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