[Gastric heterotopia of the duodenal bulb]
Gastric heterotopia is irregular, flat or nodular, usually multiple mucosal lesion of the duodenal bulb. Some authors said that an ulcer may develop from the gastric mucosa. However, it is not a precancerous lesion.
Recommendataion: When the gastric heterotopia is found for the first time, take two biopsies. In the follow-up endoscopy, however, you don't need to take biopsy.
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