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Cardiovascular System, Digestive System, Lungs and Breathing
Carcinoid Syndrome
Aug
Carcinoid syndrome refers to the array of symptoms that occur secondary to carcinoid tumors. The syndrome includes flushing and diarrhea, and, less frequently, heart failure and bronchoconstriction.
Carcinoid syndrome refers to the array of symptoms that occur secondary to carcinoid tumors. The syndrome includes flushing and diarrhea, and, less frequently, heart failure and bronchoconstriction. It is caused by endogenous secretion of mainly serotonin and kallikrein.
The carcinoid syndrome occurs in approximately 5% of carcinoid tumors and becomes manifest when vasoactive substances from the tumors enter the systemic circulation escaping hepatic degradation. Interestingly, if the primary tumor is from the GI tract (hence releasing serotonin into the hepatic portal circulation), carcinoid syndrome generally does not occur until the disease is so advanced that it overwhelms the liver’s ability to metabolize the released serotonin.
Flushing
Diarrhea:
Secondary restrictive cardiomyopathy
Abdominal pain
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