A 60-year-old woman presented with a protruding tumor at the anterior wall of the middle gastric body, and she was positive for anti-parietal cells antibodies with elevated serum gastrin level. Final diagnosis was a mixed neuroendocrine-non-neuroendocrine neoplasm consisting of adenocarcinoma (tub1) and neuroendocrine tumor G2 with autoimmune gastritis.
Keywords: adenocarcinoma; autoimmune gastritis; endoscopic submucosal dissection; mixed neuroendocrine‐non‐neuroendocrine neoplasms.
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