Medical Dictionary
gastrinoma
noun gas·tri·no·ma \ˌgas-trə-ˈnō-mə\
plural gas·tri·no·mas also gas·tri·no·ma·ta \-mət-ə\
Medical Definition of GASTRINOMA
: a tumor that often involves blood vessels, usually occurs in the pancreas or the wall of the duodenum, and produces excessive amounts of gastrin which stimulates gastric-acid secretion and consequent formation of ulcers especially in the duodenum and the jejunum—see zollinger-ellison syndrome
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