Neuroendocrine & Carcinoid Tumors (NET)s are slow growing tumors that begin in neuroendocrine cells. These cells have two interesting qualities. They have nerve-cell traits and they create hormones. NETs tend to develop over many years and may be hard to diagnose.

Learn how immunotherapy works as a cancer treatment, the types of cancer it can treat, the major kinds of immunotherapy available, and possible side effects.