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Pituitary Tumor Causes

Most pituitary tumors are benign (non-cancerous), and no one really knows for sure what causes most pituitary tumors to develop on your pituitary gland.

However, some pituitary tumors may be hereditary. A small number of pituitary tumors are caused by a rare genetic disorder called multiple endocrine neoplasia type 1 (MEN 1). This endocrine disorder can lead to over-activity or enlargement of 3 different endocrine-related glands, including the pituitary gland.

If you have a pituitary tumor, your doctor may do a simple blood test to rule out MEN 1. But as far as non-hereditary pituitary tumors, the cause remains unknown. Scientists are unsure what causes the uncontrolled growth of certain cells that leads to a pituitary tumor.

What we do know is that pituitary tumors cause certain hormones to be produced excessively, such as growth hormone or thyroid-stimulating hormone.

Whether the cause of your pituitary tumor is unknown or MEN 1, there are several treatment options for pituitary tumors.

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Pituitary Tumor Risk Factors
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