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Carcinoid tumors are the most common malignant tumor of the appendix, but they are most commonly associated with the small intestine, and they can also be found in the rectum and stomach. They are known to grow in the liver, but this finding is usually a manifestation of metastatic disease from a primary carcinoid occurring elsewhere in the body.
Pulmonary carcinoid tumour is a neuroendocrine tumour of the lung. [1] There are two types: Typical pulmonary carcinoid tumour; Atypical pulmonary carcinoid tumour;
By definition, they are greater than 4 mm in largest dimension; smaller lesions are referred to as pulmonary carcinoid tumourlets. [citation needed] The differential diagnosis of typical pulmonary carcinoid tumour includes: atypical pulmonary carcinoid tumour, pulmonary carcinoid tumourlet and lung adenocarcinoma. [citation needed]
Enterochromaffin cells, which give rise to carcinoid tumors, were identified in 1897 by Nikolai Kulchitsky and their secretion of serotonin was established in 1953 [105] when the "flushing" effect of serotonin had become clinically recognized. Carcinoid heart disease was identified in 1952, and carcinoid fibrosis in 1961. [105]
It is an uncommon low-grade malignant lung mass that is most often in the central airways of the lung. It is also known as "atypical lung carcinoid tumour", " atypical lung carcinoid" or "moderately differentiated neuroendocrine carcinoma". It is a more aggressive than typical carcinoid tumors: nodal metastases in 70% vs. 5%.
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]
There are many different kinds of endocrine tumors, some of which are listed below: Gastrointestinal ECLoma; Midgut carcinoid; Appendix carcinoid; Hindgut carcinoid sometimes also referred to as Rectal carcinoid; Pulmonary Typical bronchial carcinoid; Atypical bronchial carcinoid; Large cell neuroendocrine carcinoma; Small cell lung cancer
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 ...