Nevertheless, modern radiological diagnosis is able to solve these difficulties, which only appear to be unsurpassable obstacles to a correct and early diagnosis of cancer of the prepyloric part of the stomach. Here we stress again that good visualization of the morphological substrate can be obtained only with certain specific techniques of examination. One of these is target imaging of the pyloroduodenal region in the vertical and horizontal positions with the maximum possible tight filling. This technique can be used to estimate the contours, the elasticity of the wall, its rigidity, the extent of the involved area, and the presence of ulcers. At the same time, during examination in the vertical position, tight filling of the pylorus is often difficult in the presence of liquid, mucus, and food residues. Therefore, radiography in the vertical position should preferably be done after the patient is raised from the horizontal position, which is optimal for filling this region.

The double-contrast investigation plays an important role in the diagnosis of distal cancer. It can give the image of the tumor in its true size because the tumor becomes »trimmed« with the intact wall of the stomach as it is inflated with air. Imaging of the stomach wall with double-contrast radiology

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