Abstract
The endoscopic and radiographic findings of 45 gastric adenomas in 39 patients were followed for 6 months to 13 years and compared with type Ha early gastric cancer observed in 9 patients. Difficulties in the differential diagnosis of these disorders were evaluated. the following features were suggestive of gastric adenomas: clustered lesions; protuberance with gentle slope; smooth surface; and relatively young patients. Discrimination of adenoma from type Ha early gastric cancer is often difficult by visual observation alone; biopsy was essential in most patients. a group III adenoma verified on biopsy should be followed closely because the lesion may harbor a cancer (so-called carcinoma-in-adenoma) or a cancer may later develop.
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