User:Mr. Ibrahem/Carcinoid

Carcinoid tumor, also known as carcinoid, are a type of tumor that develop from neuroendocrine tissue. When the digestive tract is involve, symptoms may include abdominal pain, vomiting, or diarrhea. When the lungs are involves, symptoms may include trouble breathing or chest pain. Spread may results in a large liver. One in ten cases involving the appendix presents with appendicitis. About 5% of cases result in carcinoid syndrome.

The cause is generally unknown. They are associated with a genetic condition known as multiple endocrine neoplasia type 1 (MEN1). It is a type of neuroendocrine tumor. They develop from enterochromaffin cells, a type of neuroendocrine cell in the intestines. They are generally slow-growing. Diagnosis is based on lab tests, medical imaging, and biopsy.

Treatment often involves surgery. When surgery is not possible somatostatin analogs, targeted therapy, or chemotherapy may be used. In young people who can have the lung tumor removed 5 year survival is greater than 90%. They are estimated to affect about 4 in 100,000 adults. They occur more commonly in adults than children. About 10% of small bowel tumors are carcinoids, and most of these occur in the appendix and terminal ileum.