It is estimated that 25,000 people die of cancer of the stomach each year in the United States. Furthermore, the five-year survival rate of patients with this malady is depressingly low. Many factors contribute to these disastrous figures. The patient may neglect his symptoms; the consulting physician may underestimate the significance of the symptoms; diagnosis and surgical treatment may be delayed. Even if each of these aspects was handled to the maximum advantage of the patient, cancer of the stomach would continue to kill because of its low degree of operability after symptoms have developed. Hence, examination of the patient before the appearance of symptoms should have merit. Mass examination for gastric cancer in specific age groups has been recommended.
In spite of the progress in detection of malignant tumors by gastroscopy, gastric biopsy, and exfoliative cytology, roentgen examination of the stomach is believed by many to be the most