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Carcinoid syndrome is a paraneoplastic syndrome comprising the signs and symptoms that occur secondary to neuroendocrine tumors (formerly known as carcinoid tumors). [1] 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 diarrhea, and less frequently, heart failure, vomiting ...
This constellation of symptoms is called carcinoid syndrome or (if acute) carcinoid crisis. Occasionally, haemorrhage or the effects of tumor bulk are the presenting symptoms. The most common originating site of carcinoid is the small bowel, particularly the ileum; carcinoid tumors are the most common malignancy of the appendix.
Alterations in protein metabolism may also produce pellagra-like symptoms. An example is carcinoid syndrome, a disease in which neuroendocrine tumors along the GI tract use tryptophan as the source for serotonin production, which limits the available tryptophan for niacin synthesis. In normal patients, only one percent of dietary tryptophan is ...
A small intestine neuroendocrine tumor is a carcinoid in the distal small intestine or the proximal large intestine. It is a relatively rare cancer and is diagnosed in approximately 1/100000 people every year. In recent decades the incidence has increased. [1] The prognosis is comparatively good with a median survival of more than 8 years. [2]
Flushing is to become markedly red in the face and often other areas of the skin, from various physiological conditions. Flushing is generally distinguished from blushing, since blushing is psychosomatic, milder, generally restricted to the face, cheeks or ears, and generally assumed to reflect emotional stress, such as embarrassment, anger, or romantic stimulation.
Ten per cent (10%) [50] or less of carcinoids, primarily some midgut carcinoids, secrete excessive levels of a range of hormones, most notably serotonin (5-HT) or substance P, [51] causing a constellation of symptoms called carcinoid syndrome: [citation needed] flushing; diarrhea; asthma or wheezing; congestive heart failure (CHF) abdominal ...
Lanreotide, sold under the brand name Somatuline among others, is a medication used in the management of acromegaly and symptoms caused by neuroendocrine tumors, most notably carcinoid syndrome. It is a long-acting analogue of somatostatin, like octreotide. Lanreotide (as lanreotide acetate) is manufactured by Ipsen.
The symptoms of a sympathetic pheochromocytoma are related to sympathetic nervous system hyperactivity. [10] The classic triad includes headaches (likely related to elevated blood pressure, or hypertension ), tachycardia /elevated heart rate, and diaphoresis (excessive sweating, particularly at night, also known as hyperhidrosis ). [ 7 ]
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