A small tumor that secretes serotonin and is usually found in the gastrointestinal tract
A tumor which may secrete large amounts of the hormone serotinin. The tumor usually arises in the gastrointestinal tract anywhere between the stomach and the rectum (the favorite spot is in the appendix) and from there may metastasize (spread) to the liver. In the liver the tumor produces and may release large quantities of serotonin into the systemic bloodstream.
A tumor that develops from neuroendocrine cells.
(KAR-sin-oyd) A slow-growing type of tumor usually found in the gastrointestinal system (most often in the appendix), and sometimes in the lungs or other sites. Carcinoid tumors may spread to the liver or other sites in the body, and they may secrete substances such as serotonin or prostaglandins, causing carcinoid syndrome.
a tumor, usually benign or of low-grade malignancy, that is often found in the intestines
A benign or a malignant tumor arising from the mucosa of the gastrointestinal tract.
Carcinoid, also carcinoid tumour and carcinoid tumor, is a slow-growing but often malignant type of neuroendocrine tumour, originating in the cells of the neuroendocrine system. They were first characterized in 1907 by Siegfried Oberndorfer, a German pathologist at the University of Munich, who coined the term karzinoide, or "carcinoma-like", to describe the unique feature of behaving like a benign tumor despite having a malignant appearance microscopically. The recognition of their endocrine-related properties were later described by Gosset and Masson in 1914, and these tumors are now known to arise from the enterochromaffin (EC) and enterochromaffin-like (ECL) cells of the gut.