Current aspects of medical therapy of gastrointestinal neuroendocrine tumors

Summary. Neuroendocrine tumors (NET) are known to be rare disease but in recent 30 years their incidence increased almost in 5 times, especially the frequency of gastrointestinal tumors. Considering the fact, that in diagnosis ant treatment of NET take part doctors of various specialties, multidisciplinary groups are created for the study of these diseases. The great progress in the understanding of NET biology was achieved in the world in recent decades. The concept of the NET terminology has changed, as well as their classification and basic principles of diagnosis and treatment.