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A carcinoid (also carcinoid tumor) is a slow-growing [1] type of neuroendocrine tumor originating in the cells of the neuroendocrine system. In some cases, metastasis may occur. Carcinoid tumors of the midgut ( jejunum , ileum , appendix , and cecum ) are associated with carcinoid syndrome .
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 ...
Pulmonary carcinoid tumour is a neuroendocrine tumour of the lung. [1] There are two types: Typical pulmonary carcinoid tumour; Atypical pulmonary carcinoid tumour;
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%.
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]
The most common sarcoma in the intestine are gastrointestinal stromal tumors (GISTs) Lymphoma – these cancers start in lymphocytes. Carcinoid tumors of the midgut – this is a type of neuroendocrine tumor (NET). They tend to be slow growing and are the most common type of small intestine tumor. (American Cancer Society, 2023)
Duodenal cancer is a cancer in the first section of the small intestine known as the duodenum.Cancer of the duodenum is relatively rare compared to stomach cancer and colorectal cancer.
A gastrointestinal carcinoid tumor is a rare, slow-growing form of cancer that affects certain cells in the lining of the stomach and intestines. The cells it affects make hormones that regulate the production of digestive juices and muscles that move food through the stomach and intestines.