About The Medical Condition Carcinoid Tumor
Find the definition of the medical term Carcinoid Tumor. Carcinoid Tumor defined and explained for easy understanding at the Medical Conditions from ClusterMed.info.
Carcinoid Tumor
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What's The Definition Of The Medical Condition Carcinoid Tumor?
A usually small, slow-growing neoplasm composed of islands of rounded, oxyphilic, or spindle-shaped cells of medium size, with moderately small vesicular nuclei, and covered by intact mucosa with a yellow cut surface. The tumor can occur anywhere in the gastrointestinal tract (and in the lungs and other sites); approximately 90% arise in the appendix. It is now established that these tumors are of neuroendocrine origin and derive from a primitive stem cell. (From Stedman, 25th ed & Holland et al., Cancer Medicine, 3d ed, p1182)
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