What does Carcinoid syndrome mean in medical term?

Carcinoid syndrome means: Carcinoid Syndrome: This is a syndrome caused by a carcinoid tumor that secretes large quantities of the hormone serotonin. Serotonin is the direct cause of this syndrome. Flaming and blushing are common symptoms.
(in Medical Dictionary)

What else does Carcinoid syndrome mean?

The majority of carcinoid tumors are found in the digestive tract. However, the stomach is not the only place where they can develop. The tumor releases large amounts of serotonin from the liver into the systemic circulation.
(in Medical Dictionary)