Abstract
A 45-year-old male visited our hospital for a medical examination without any clinical complaints. The patient had an gastroscopy, which revealed a 30mm*30mm hemispherical submucosal tumor arising from the lesser curvature of the gastric body , suggesting a gastrointestinal stromal tumor (GIST) as a preoperative diagnosis;Endoscopic resection was determined to be the best choice and the patient underwent a endoscopic full-thickness resection and endoscopic purse-string suture. Except for a slight low fever, the patient was well recovered and was discharged on his 7th post-operation. Pathological analysis and immunohistochemical staining showed fascicular growth of neoplastic Schwann cells and confirmed the diagnosis of gastric schwannoma through high positivity for S-100 protein.
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