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We report on a 51-year-old female patient with familial adenomatous polyposis (FAP) that developed into advanced gastric cancer after long-term observation without any treatment (>12 years). We observed gastric carcinogenesis using immunohistochemistry. The patient had a FAP pedigree, and onset of FAP is reported in 11 members of her family. During clinic visits, a total of 12 endoscopies of the large bowel were carried out and tubular adenoma of group 2–3 was seen during all examinations. In a recent detailed examination of the upper gastrointestinal tract, Borr type III gastric cancer was found, with many hepatic metastasis lesions and many polyps in the fundic gland (fig 1A,B).
(A) Many polyps in the fundic gland region and (B) Borr type III advanced gastric cancer with deep ulcer in the upper gastric body, …
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Competing interests: None declared.