NCIt definition : A syndrome characterized by signs and symptoms caused by advanced carcinoid tumors.
They include skin flushing, diarrhea, wheezing, and tachycardia.;
Alternative definition : NCI-GLOSS: A combination of symptoms caused by the release of serotonin and other
substances from carcinoid tumors of the gastrointestinal tract. Symptoms may include
flushing of the face, flat angiomas (small collections of dilated blood vessels) of
the skin, diarrhea, bronchial spasms, rapid pulse, and sudden drops in blood pressure.;