Most carcinoids are indolent tumors, but with malignant potential. The well-known carcinoid syndrome is caused by tumoral production of serotonin, and its symptoms include flushing, diarrhea ...

This means the same as neuroendocrine cancer. There are 2 key groups of lung neuroendocrine cancer: lung neuroendocrine tumours (NETs) - these include typical carcinoids and atypical carcinoids lung ...