Glucagonoma is a very rare cancer of the pancreas that results in the overproduction of the hormone glucagon. There are only about 250 recorded cases. 

Because glucagon increases the level of blood sugar by breaking down fatprotein and amino acids. This leads to anemiadiarrhea and rapid weight loss. An associated paraneoplastic syndromenecrolytic migratory erythema, causes widespread blisters and edema. Patients usually develop the symptoms of diabetes mellitus, although the etiology is different.

The disease is usually diagnosed by the presence of very high levels of glucagon in the blood, but many patients show only elevated levels.

Although surgery is the only possibily of a cure, the symptoms can be controlled with drugs that inhibit glucagon production or damage the pancreatic cells that create glucagon.

Glucagonoma at Wikipedia

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