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In a fluoroscopic survey of the abdomen, an important factor that may be overlooked is the appearance of the magenblase, or air bubble of the stomach. The normal air bubble (fig. 1) has. a wide variation as to size and shape, but all agree in the absence of any irregularity in contour. By a careful inspection of this region, irregularities due to the projection within it of an infiltrative mass may be noted, and a diagnosis of carcinoma of this region made, even prior to the administration of a barium meal. The barium, however, by coating the mass, may bring it into clearer relief.
In order to emphasize the significance of the deformed bubble, I am including the roentgenograms of three cases of operatively demonstrated carcinoma of the cardiac zone of the stomach. These cases represent various degrees in deformity, from the crescentic deformity of the base, due to the
Buckstein J. DEFORMITY OF THE AIR BUBBLE OF THE STOMACH IN CARCINOMA. JAMA. 1926;86(24):1834. doi:10.1001/jama.1926.26720500002008b
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