PMID- 20938461 OWN - NLM STAT- MEDLINE DCOM- 20110217 LR - 20211020 IS - 1759-5053 (Electronic) IS - 1759-5045 (Linking) VI - 7 IP - 11 DP - 2010 Nov TI - Esomeprazole-induced hyperchromograninemia in the absence of concomitant hypergastrinemia. PG - 642-6 LID - 10.1038/nrgastro.2010.152 [doi] AB - BACKGROUND: A 37-year-old female, who had a neuroendocrine pancreatic neoplasm, underwent duodeno-cephalo-pancreatectomy. In the 2 years following surgery, she had normal levels of serum chromogranin A (CgA), gastrin and other tumor markers. About 3 years after surgery, owing to the onset of reflux-like dyspeptic symptoms, the patient started treatment with the PPI esomeprazole. During PPI treatment, the patient's serum CgA level rose to more than three times the upper limit of normal, although her gastrin levels remained in the normal range. These findings were interpreted as being suggestive of neuroendocrine tumor relapse. INVESTIGATIONS: Thoraco-abdominal CT, In(1)(1)(1)-octreotide total body scan, CT of sella turcica, Tc(99m)-sestamibi neck scan, mutational analysis of chromosome 11q13 (site of multiple endocrine neoplasia type 1 [MEN1] gene). Discontinuation of, and rechallenge with, esomeprazole. DIAGNOSIS: Esomeprazole-induced hyperchromograninemia in the absence of elevated levels of fasting serum gastrin. MANAGEMENT: Discontinuation of acid-suppressive treatment and continuation of oncologic follow-up. FAU - Gori, Giovanni AU - Gori G AD - Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa, via Roma, 55-56126 Pisa, Italy. FAU - Spinelli, Giacomo AU - Spinelli G FAU - Spinelli, Claudio AU - Spinelli C FAU - Tuccori, Marco AU - Tuccori M FAU - Blandizzi, Corrado AU - Blandizzi C FAU - Del Tacca, Mario AU - Del Tacca M LA - eng PT - Case Reports PT - Journal Article DEP - 20101012 PL - England TA - Nat Rev Gastroenterol Hepatol JT - Nature reviews. Gastroenterology & hepatology JID - 101500079 RN - 0 (Anti-Ulcer Agents) RN - 0 (Chromogranin A) RN - 0 (Gastrins) RN - N3PA6559FT (Esomeprazole) SB - IM MH - Adult MH - Anti-Ulcer Agents/*adverse effects MH - Chromogranin A/*blood MH - Education, Medical, Continuing MH - Esomeprazole/*adverse effects MH - Female MH - Gastrins/*blood MH - Gastroesophageal Reflux/blood/complications/*drug therapy MH - Humans MH - Neuroendocrine Tumors/complications EDAT- 2010/10/13 06:00 MHDA- 2011/02/18 06:00 CRDT- 2010/10/13 06:00 PHST- 2010/10/13 06:00 [entrez] PHST- 2010/10/13 06:00 [pubmed] PHST- 2011/02/18 06:00 [medline] AID - nrgastro.2010.152 [pii] AID - 10.1038/nrgastro.2010.152 [doi] PST - ppublish SO - Nat Rev Gastroenterol Hepatol. 2010 Nov;7(11):642-6. doi: 10.1038/nrgastro.2010.152. Epub 2010 Oct 12.