What does Carcinoid tumor mean?

Carcinoid tumor meaning in Medical Dictionary

A tumor which secretes considerable amounts of this hormones serotonin. Carcinoid tumor can be known as an argentaffinoma. The tumefaction often arises in the intestinal system, between the stomach and the anus (the favourite spot is in the appendix) and from there may metastasize (spread) towards the liver. Within the liver the cyst produces and releases large quantities of serotonin to the systemic bloodstream.