Extremely elevated serum levels of gastrin are typically indicative of:

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Extremely elevated serum levels of gastrin are typically indicative of Zollinger-Ellison syndrome, a rare disorder characterized by gastrin-secreting tumors in the pancreas or duodenum. The excess gastrin causes the stomach to produce too much acid, leading to recurrent peptic ulcers and other gastrointestinal symptoms. Insulinoma, diabetes mellitus, and cystic fibrosis are not typically associated with elevated gastrin levels.

Extremely Elevated Serum Levels of Gastrin Are Typically Indicative Of