insulinoma

An islet cell adenoma that secretes insulin.

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in·su·lin·o·ma .in(t)-s(ə-)lə-'nō-mə n, pl -mas also -ma·ta -mət-ə a usu. benign insulin-secreting tumor of the islets of Langerhans

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n.

an insulin-producing tumour of the beta cells in the islets of Langerhans of the pancreas. Symptoms can include sweating, faintness, episodic loss of consciousness, and other features of hypoglycaemia (see Whipple's triad). Single tumours can be removed surgically. Multiple very small tumours scattered throughout the pancreas cannot be treated by surgery but do respond to drugs that poison the beta cells, including diazoxide.

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in·su·li·no·ma (in″sə-lin-oґmə) an islet cell tumor of the beta cells; although usually benign, such tumors secrete excessive amounts of insulin and are among the most important causes of hypoglycemia. Called also insuloma.