Carcinoid syndrome causes

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Parminder Dhingra, M.D. [2]

Overview

Majority of the cases of gastrointestinal carcinoid are sporadic, however gastrointestinal carcinoid is associated with mutations in MEN1 and NF1 genes.

Causes

Common causes of carcinoid syndrome include:

• Genetic disorders
  • Multiple endocrine neoplasia type 1
  • Neurofibromatosis type 1.
  • Carcinoids associated with multiple endocrine neoplasia type 1 appear to be of foregut origin.
  • Carcinoids in patients with neurofibromatosis type 1 appear to arise primarily in the periampullary region.
• In sporadic gastrointestinal carcinoids, numerous chromosomal imbalances have been found by comparative genome hybridization analysis.
  • Gains involving chromosomes 5, 14, 17 (especially 17q), and 19 and losses involving chromosomes 11 (especially 11q) and 18 appear to be the most common.