A Giant Gastric Adenoma Embedded in the Duodenum.

Gastric adenomas are usually located in the antrum, or occasionally in the fundus of the stomach. Most adenomas are solitary, pedunculated mass. The report describes a 17-year girl who visited the emergency room with complaints of stabbing pain of upper abdomen, nausea, vomiting and melena for last one week. Emergency endoscopic examination revealed a giant polyp with a long about 15 cm pedicle embedded in the duodenum. The polyp was completely removed by surgery, about 15 x 3 x 4 cm in size. At 5-year follow-up by endoscopy and ultrasonography, the patient remained in good general condition. It emphasizes that giant gastric adenomas must be removed by endoscopy or surgery due to its potential of malignancy. It is necessary to follow-up for detecting early gastric neoplasm.