Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0017168 (gastroesophageal reflux disease)
 11,783 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 47-year-old man with a history of allergic rhinitis presented with a several-month history of nasal symptoms and gastroesophageal reflux disease. He also had clinical depression, for which he had been taking a selective serotonin reuptake inhibitor (SSRI). During evaluation, flexible laryngoscopy incidentally detected a left interarytenoid polyp. Biopsy identified the lesion as a moderately differentiated neuroendocrine carcinoma. In addition to conducting a metastatic workup, we determined that it was necessary to evaluate the functional status of the tumor prior to excision because the SSRI could precipitate a carcinoid syndrome. We discuss the characteristics and management of different neuroendocrine carcinomas of the larynx, and we review the potential complications of the carcinoid syndrome.
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PMID:Atypical carcinoid of the larynx and potential complications of the carcinoid syndrome: a case report. 1917 57

We present a case of a gastric neuroendocrine carcinoma in a patient with a history of long-term proton pump inhibitor (PPI) use. A 49-year-old man using PPI for the last 15 years due to gastroesophageal reflux disease developed progressive dysphagia, dyspepsia and weight loss. Upper gastrointestinal endoscopy, endoscopic ultrasonography and abdominal CT diagnosed a malignant tumor localized to a hiatal hernia. Fasting serum chromogranin A and gastrin concentrations were elevated (32 nmol/l and 159 pmol/l, respectively). Helicobacter pylori PCR analysis of antral biopsies was negative. Biopsies from endoscopically normal oxyntic mucosa showed enterochromaffin-like (ECL) cell hyperplasia. Tumor biopsies revealed a poorly differentiated neuroendocrine carcinoma. Sevier-Munger staining, immunohistochemistry and electron microscopy indicated ECL cell as origin of the tumor cells. Concerns have previously been raised about the safety of long-term PPI use due to a possible increased risk of cancer. This case illustrates a patient with a poorly differentiated neuroendocrine carcinoma with ECL cell characteristics probably induced by hypergastrinemia secondary to long-term PPI use.
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PMID:Gastric neuroendocrine carcinoma after long-term use of proton pump inhibitor. 2208 94