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[Hyperplasiogenic polyps and risk of stomach cancer].

In 731 hyperplasiogenic polyps which have been removed by endoscopical polypectomy there were 9 polyps with an early cancer and 8 polyps with severe dysplasias (borderline lesions) as well as 1 polyp, in which an advanced carcinoma has been developed. This is the outstanding greatest number of hyperplasiogenic polyps with a malignant transformation. In addition in 9 patients with hyperplasiogenic polyps carcinomas could be discovered, i.e. a rate for malignant developments of 3.7%. It seems that stomachs with multiple polyps are endangered in particular. The recurrence rate of follow-up examinations covering a period of up to 8 years was 36.1%.