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A pituitary tumor is an abnormal growth in the pituitary gland, the part of the brain that regulates the body's balance of hormones.
The pituitary gland is a pea-sized endocrine gland located at the base of the brain. The pituitary regulates and controls the release of hormones from other endocrine glands, which in turn regulate many body processes. These hormones include:
- Adrenocorticotropic hormone (ACTH)
- Growth hormone (GH)
- Prolactin
- Thyroid-stimulating hormone (TSH)
About 75% of pituitary tumors release hormones. When a tumor produces too much of one or more hormones, the following conditions may occur:
- Central hypothyroidism (excess thyroid-stimulating hormone)
- Cushing syndrome (excess adrenocorticotropic hormone)
- Gigantism or acromegaly (excess growth hormone)
- Prolactinoma (excess prolactin)
As the tumor grows, hormone-secreting cells of the pituitary may be damaged, causing hypopituitarism.
The causes of pituitary tumors are unknown, although some are a part of a hereditary disorder called multiple endocrine neoplasia I (MEN I).
There are other types of tumors that can be found in the same area of the head as a pituitary tumor:
- Craniopharyngiomas
- Cysts
- Germinomas
- Tumors that have spread from cancer in another part of the body (metastatic tumors)
About 15% of tumors in the skull are pituitary tumors. Most pituitary tumors are located in the anterior pituitary lobe and are usually noncancerous (benign).
Pituitary tumors develop in about 20% of people, although many of the tumors do not cause symptoms and the condition is never diagnosed during the person's lifetime...
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This article also includes causes; a comprehensive symptoms list; treatments and much more. Read it at http://health.nytimes.com/health/guides/disease/pituitary-tumor/overview.html?scp=1&sq=pituitary%20tumours&st=cse
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MaryONote: It's so nice to see articles like this getting out into the mainstream press. For so many years pituitary tumors weren't talked about. As a matter of fact, often when I've told people about my surgery they didn't even know where the pituitary gland was located. Many would indicate the abdominal area and think it was there.
Hopefully, with more news items in papers and on TV the general public will be more aware of the pituitary (and adrenal) and their various locations.
Someday...I wish...that people will be aware of Cushing's like they are of thyroid issues or diabetes. not that I wish that more people had Cushing's, of course, but I'd just like to see more awareness, knowledge and understanding.
Someday, I hope that people will be tested more routinely for these "orphan diseases", doctors won't automatically decide that the patient is causing his/her own symptoms and get to the diagnostic and treatment phases more quickly.
A statistic I've seen many times over the years, that 20% of all people have a pituitary tumor was mentioned in this article:
Pituitary tumors develop in about 20% of people, although many of the tumors do not cause symptoms and the condition is never diagnosed during the person's lifetime.
The last part is especially scary: "the condition is never diagnosed during the person's lifetime."
How about getting people diagnosed - and cured - while they're still alive?
Originally posted on Cushing's & Cancer
2 comments:
Hi there! Keep it up! This is a good read. I will be looking forward to visit your page again and for your other posts as well. Thank you for sharing your thoughts about pituitary tumor. I am glad to stop by your site and know more about pituitary tumor.
Most tumours are benign but are quite serious because of their position close to important brain structures.
Because the pituitary gland is responsible for the production of hormones key to proper body function, tumors often interfere with this production—either by limiting the amount of hormone produced or generating excessive amounts. Growth hormone (regulates body height and structure), prolactin (controls lactation, or milk production), sex hormones (control the menstrual cycle and other sexual functions), thyroid gland hormones (control the thyroid gland), adrenal gland hormones, and vasopressin (a hormone involved in water and electrolyte balance) are all examples of hormones that can be affected. Growing tumors can also push on surrounding structures, often resulting in headaches, behavioral changes, and vision problems.
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