PMID- 28160247 OWN - NLM STAT- MEDLINE DCOM- 20170320 LR - 20181113 IS - 1865-7265 (Electronic) IS - 1865-7265 (Linking) VI - 10 IP - 2 DP - 2017 Apr TI - Adenocarcinoma arising in multiple hyperplastic polyps in a patient with Helicobacter pylori infection and hypergastrinemia during long-term proton pump inhibitor therapy. PG - 128-136 LID - 10.1007/s12328-017-0714-7 [doi] AB - We report a case of developing multiple adenocarcinoma foci in multiple hyperplastic polyps in a patient with Helicobacter pylori infection and hypergastrinemia during long-term proton pump inhibitor (PPI) therapy. A 57-year-old man, who was undergoing hemodialysis for chronic renal failure, underwent an upper gastrointestinal endoscopy to elucidate the cause of anemia. Atrophic gastritis with H. pylori infection and multiple adenocarcinoma foci in multiple hyperplastic polyps were found in the endoscopic and histological examinations. Enterochromaffin-like micronests and parietal cell protrusion in the background of the polyps suggested the existence of hypergastrinemia. The serum gastrin level was markedly high-10,206 pg/ml (normal range 37-172 pg/ml). The cause of this marked hypergastrinemia was not autoimmune gastritis and gastrinoma. After discontinuing PPI therapy and successful eradication of H. pylori, the serum gastrin level decreased to normal range. These findings indicate that hypergastrinemia may be caused by long-term PPI therapy in patients with H. pylori infection. This case suggests that hypergastrinemia may mediate gastric carcinogenesis in patients with H. pylori infection. FAU - Anjiki, Hajime AU - Anjiki H AUID- ORCID: 0000-0001-7157-5352 AD - Department of Gastroenterology, Toyosato Hospital, 12 Hachime, Toyosato-cho, Inukami-gun, Shiga, 529-1168, Japan. ananjikijiki@bell.ocn.ne.jp. FAU - Mukaisho, Ken-Ichi AU - Mukaisho KI AD - Department of Pathology, Division of Molecular Diagnostic Pathology, Shiga University of Medical Science, Otsu, Japan. FAU - Kadomoto, Yu AU - Kadomoto Y AD - Department of Gastroenterology, Toyosato Hospital, 12 Hachime, Toyosato-cho, Inukami-gun, Shiga, 529-1168, Japan. FAU - Doi, Hisakazu AU - Doi H AD - Department of Gastroenterology, Toyosato Hospital, 12 Hachime, Toyosato-cho, Inukami-gun, Shiga, 529-1168, Japan. FAU - Yoshikawa, Kunio AU - Yoshikawa K AD - Department of Gastroenterology, Toyosato Hospital, 12 Hachime, Toyosato-cho, Inukami-gun, Shiga, 529-1168, Japan. FAU - Nakayama, Takahisa AU - Nakayama T AD - Department of Pathology, Division of Molecular Diagnostic Pathology, Shiga University of Medical Science, Otsu, Japan. FAU - Vo, Diem Thi-Ngoc AU - Vo DT AD - Department of Pathology, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam. FAU - Hattori, Takanori AU - Hattori T AD - Department of Pathology, Division of Molecular Diagnostic Pathology, Shiga University of Medical Science, Otsu, Japan. FAU - Sugihara, Hiroyuki AU - Sugihara H AD - Department of Pathology, Division of Molecular Diagnostic Pathology, Shiga University of Medical Science, Otsu, Japan. LA - eng PT - Case Reports PT - Journal Article DEP - 20170203 PL - Japan TA - Clin J Gastroenterol JT - Clinical journal of gastroenterology JID - 101477246 RN - 0 (Gastrins) RN - 0 (Proton Pump Inhibitors) SB - IM MH - Adenocarcinoma/*etiology MH - Cocarcinogenesis MH - Drug Administration Schedule MH - Gastrins/blood MH - Gastritis, Atrophic/complications MH - Gastroscopy MH - Helicobacter Infections/*complications MH - *Helicobacter pylori MH - Humans MH - Hyperplasia MH - Male MH - Middle Aged MH - Polyps/diagnosis/etiology MH - Proton Pump Inhibitors/administration & dosage/*adverse effects MH - Stomach Neoplasms/diagnosis/*etiology OTO - NOTNLM OT - Gastric adenocarcinoma OT - H. pylori infection OT - Hypergastrinemia OT - Proton pump inhibitor therapy EDAT- 2017/02/06 06:00 MHDA- 2017/03/21 06:00 CRDT- 2017/02/05 06:00 PHST- 2016/07/23 00:00 [received] PHST- 2017/01/17 00:00 [accepted] PHST- 2017/02/06 06:00 [pubmed] PHST- 2017/03/21 06:00 [medline] PHST- 2017/02/05 06:00 [entrez] AID - 10.1007/s12328-017-0714-7 [pii] AID - 10.1007/s12328-017-0714-7 [doi] PST - ppublish SO - Clin J Gastroenterol. 2017 Apr;10(2):128-136. doi: 10.1007/s12328-017-0714-7. Epub 2017 Feb 3.