Problem 2RCQ: How does pressure at the bottom of a body of water relate to... How does pressure at the bottom of a body of water relate to the weight of water above each square meter of the bottom surface? Chapter , Problem is solved.
The mutations that cause carcinoid tumors often affect the MEN1 gene, the same gene responsible for most familial neuroendocrine tumors and neuroendocrine cancers. But not much is known about exactly what causes these gene changes. Doctors do know that carcinoid tumors start out very small and grow slowly. When patients have parts of their stomach or small intestine removed to treat other diseases, taking a close look under the microscope often shows small groups of neuroendocrine cells that look like tiny carcinoids.
The 10 Most Common Brain Tumors. There are approximately 23,000 new brain cancer diagnoses each year in the U.S. These brain masses develop when abnormal cancer cells accumulate in one areaâin this case, the brain. Primary brain tumors originate in the cells and tissues that make up the brain and central nervous system. Medical science canât pinpoint exactly what causes the develop brain tumors. However, there are common factors that make some people more susceptible than others.