This page includes the following topics and synonyms: Pituitary Adenoma, Pituitary Spanish, Adenoma Pituitario Secretorio de Prl, Adenoma Pituitario. Many growth hormone-secreting adenomas have an acquired mutation in a gene called GNAS1. These mutations are much less common in. They are defined as pituitary adenomas greater than 10 mm in size and are approximately twice as common as pituitary microadenomas. On imaging, they.
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Pituitary macroadenoma | Radiology Reference Article |
DNA is the chemical in each of our cells that makes up our genes — the instructions for how our cells function. We usually look like our parents because they are the source of our DNA. But DNA affects more than how we look.
Some genes control when cells grow, divide into new lituitario, and die. Genes that help cells grow, divide, and stay alive are called oncogenes. Genes that slow down cell division or cause cells to die at the right time are called tumor suppressor genes. Tumors can be caused by DNA changes that turn on oncogenes or turn off tumor suppressor genes.
Some people inherit gene mutations changes from their parents that greatly increase their risk for developing pituitary tumors. But often, gene mutations occur during life rather than having been inherited. In some types of cancer, these acquired mutations can be caused by outside exposures, such as radiation or cancer-causing pituihario.
Most pituitary tumors are not cancers, and there are no known environmental causes for these tumors. The gene changes in these tumors might just be random events that sometimes happen when a cell divides, without having an outside cause.
Many growth hormone-secreting adenomas have an acquired mutation in a gene called GNAS1. These mutations are much less common in other types of pituitary adenomas.
What is known is that there is a loss of the regulatory mechanism that normally keeps the pituitary cells from growing and making too much hormone. The American Cancer Society medical and editorial content team Our team is made up of doctors and master’s-prepared nurses with deep knowledge of cancer care as well as journalists, editors, and translators with extensive experience in medical writing.
November 2, Last Revised: For reprint requests, please see our Content Usage Policy. Can Pituitary Tumors Be Prevented? What Causes Pituitary Tumors?
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