ESD achieved a higher complete resection rate than EMR and comparable to TEM. Tumor recurrence was not observed in the endoscopic resection and TEM groups, regardless of the completeness of resection. Small neuroendocrine tumors of the gastrointestinal tract can be managed reliably with both endoscopic resection and TEM.

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Recent research reveal that the diagnosis of gastric extraluminal compressions mimicking subepithelial tumor is increasing in numbers as esophagogastroduodenoscopy becomes widespread. Endoscopic ultrasonography is a very useful tool for differentiating extraluminal compressions from subepithelial tumors. Gastric extraluminal compressions are due to compression by either normal adjacent organs or pathologic conditions. Pathologic conditions are mainly benign, but some requires operation according to its size. We report a case of a 24-year-old female, who underwent esophagogastroduodenoscopy and was misdiagnosed with gastric subepithelial tumor. Endoscopic ultrasonographic findings showed anechoic cyst outside the gastric wall, which revealed to be a splenic cyst.

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