<prompt> Answer this question truthfullyWhat are the natural history, complications, and prognosis of carcinoid syndrome?  <response>: <reason> Common complications of carcinoid tumor include: Increased risk of falls and injury from hypotension Bowel obstruction Gastrointestinal bleeding Carcinoid heart disease develops in more than one-third of patients with carcinoid syndrome: Fibrosis of the tricuspid valve and pulmonary valve, rarely the mitral valve in cases with left sided involvementTricuspid and pulmonic regurgitation TIPS - Tricuspid Insufficiency, Pulmonic Stenosis Pulmonary stenosis Mitral and aortic insufficiency Cardiac dysrhythmias 