Medicine: Balloon Test

Few cancers are harder to detect in the early stages than cancer of the stomach.

In the Journal of the American Medical Association last week, Dr. George N. Papanicolaou reported that he and two associates at the New York Hospital-Cornell Medical Center had worked out a new technique for diagnosing stomach cancer.

In theory, it should have been easy to draw off gastric juices through a tube and make a smear to find the distinctive cells which have been sloughed off by the cancer. But the results proved accurate in only one out of...

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