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Case Rep Gastroenterol. 2012 Sep;6(3):590-5. doi: 10.1159/000343157. Epub 2012 Sep 18.

Primary hepatic gastrinoma as an unusual manifestation of zollinger-ellison syndrome.

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1
Departments of Gastroenterology and Hepatology.

Abstract

We report a rare case of primary hepatic gastrinoma. A 77-year-old woman exhibited continuous watery diarrhea for 8 months and weight loss. Bacterial cultures of the stools were negative and colonoscopy revealed no abnormalities. Esophagogastroduodenoscopy showed severe reflux esophagitis and multiple duodenal erosions. Computed tomography and magnetic resonance imaging detected two solid masses measuring <2 cm in diameter in the right lobe of the non-cirrhotic liver. Microscopically, the tumor was consistent with neuroendocrine tumor (grade 2) with abundant gastrin-immunoreactive cells. Endoscopic ultrasound detected no other alternative primary source of an endocrine tumor. The serum gastrin levels exceeded 40,000 pg/ml in the absence of H(2) receptor antagonist and proton pump inhibitor administrations. Based on an arterial stimulation and venous sampling test, the patient was diagnosed as primary gastrinoma of the liver. Our findings demonstrated the presence of Zollinger-Ellison syndrome in a patient who was subsequently cured by surgical resection of the liver tumors.

KEYWORDS:

Arterial stimulation and venous sampling test; Gastrinoma; Zollinger-Ellison syndrome

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