Spontaneous disappearance of gastric polyps: report of four cases.

During follow-up radiologic observations of 88 subjects with benign gastric polyps, four rare cases were encountered. In two of these, the polyps had become detached; in the other two, they decreased in size. One of the latter eventually disappeared. Possible causes, though not yet established, are considered. These four cases are discussed in light of earlier reports in the literature.