In vitro and in vivo Radioautography in Recognition and Localization of Gastric Cancer.

Conclusion 1) A technic of in vivo gastric radioautography is described, employing a balloon (condom) coated with a photosensitive emulsion. Its use in recognition of gastric cancer is outlined. 2) The method served to identify correctly and uniformly the presence of gastric malignancy. There have been no false negatives. The only false positives observed have been in healing gastric ulcers; the nature of this discrepancy needs to be resolved by a larger experience and continued study of the problem.