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cancer

Carcinoid syndrome

Carcinoid is a paraneoplastic syndrome comprising the signs and symptoms that occur secondary to neuroendocrine . The syndrome is caused by neuroendocrine tumors most often found in the gut releasing biologically active substances into the blood causing symptoms such as flushing and , and less frequently, heart failure, vomiting and bronchoconstriction.

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Plain-language summary adapted from Wikipedia. Not medical advice.