How many types of pituitary tumors are there?

2 groups. The are essentially 2 groups of pituitary tumors, both of which are benign. Functioning pit tumors oversecrete one hormone such as acth (cortisol), growth hormone, or prolactin are the common ones. The majority of pit tumors are non-functioning and don't secrete any hormones but cause symptoms because of their size. Your endocrinologist can disting them.
Too many. Any of the cell types in pituitary may give rise to a tumor. Some make hormone some do not, however all are serious.

Related Questions

If you had an intradural, extramedullary tumor at L4 of uncertain type and a pituitary tumor that has caused years of diagnostic confusion and multiple conflicting opinions, would you get biopsies?

Yes. That's the only way to get answers for things like this. Get the biopsies and settle the issue.
Yes I would. Getting a biopsy done on this spinal tumor (or aim for complete excision, is possible) could help define the nature/type of this tumor and hence may also help in providing a reliable medical therapy in the future.

Is a pituitary tumor a type of brain cancer?

Most are not. The most common pituitary tumor is an adenoma, which is a benign tumor and not a cancer. Some rarer types of tumors can be more aggressive.
NO. Most pituitary tumors are not cancer. Although some are cancerous, most are not. A biopsy/resection is the only way to be certain. Please discuss the risks/benefits/alternatives of surgical biopsy with your neuro surgeon.
Sort of. Please see braintumorclinic. Org for more diagnosis-specific information.

Is Acromelagy always due a pituitary tumor?

Other rare causes. Growth hormone (GH) producing pituitary tumor is the primary cause for acromegaly. Other reported cases are rare, including: GH-releasing hormone producing hypothalamic tumor (an area above the pituitary) and ectopic GH production by neuroendocrine tumor or small cell lung cancer. Excess GH is also rarely secreted by certain lymphoma.
No. Diagnosing acromegaly involves 2 blood tests that measure level of insulin-like growth factor-1 (IGF-1) and oral glucose tolerance t\ (OGTT). Difficult to test level of growth hormone (GH) in acromegaly. Scan of head performed to confirm presence an adenoma in pituitary gland. If no tumor detected, a CT scan of abdomen and pelvis looks for tumors of adrenal, pancreas or pvary producing GH.

How are pituitary tumors tested?

Labs. Blood testings can determine if the tumor is increasing or decreasing hormones production/secretion.
Imaging and hormones. The pituitary controls most of the hormones in the body. When the pituitary is either too active or not working well, the hormone levels will show a major problem. Then specific imaging can be done to look carefully at the pituitary to look for a region of tumor. These tests should be done under the supervision of an expert in hormones - an endocrinologist.

How do we treat pituitary tumors?

It depends. Often a first step is tumor removal (and obtaining a biopsy specimen), now frequently performed as an endoscopic surgery through the sinuses, usually done by both an ENT surgeon and a neurosurgeon. Tumors which make pituitary hormones may shrink or stabilize with oral medication. Large or aggressive tumors may require targeted radiation therapy, e.g. Cyber knife, after (or instead of) surgery.
Medicine or surgery. If the tumor is secreting a hormone, it could be treated with medication and or surgery. If it is greater than 1.0 cm and growing, it is most often treated with surgery. Once in a while, radiation is used to treat such tumors.

Are all pituitary tumors the same?

No. Pituitary tumors can be benign adenomas (non-cancerous) or malignant carcinomas (cancerous). Also, many tumors are bland tumors whoch grow into the neigboring tissues an cause symptoms (headaches, viusal changes, etc). Other tumors secrete hormones and cause distant effects on other organs such as the adrenal glands for example.
Tough question. Tumors of the pituitary vary almost as much as the type of people who ask questions to health tap. Think of the pituitary as an attachment of the brain that receives information and sends messages in the form of hormones throughout the body. Abnormal growths can occur within and around this gland as well as excessive growth due to too much or too little information and hormone in and output.
Pituitary tumors. Most are Adenomas. They can be Micro or Macro, depending on size. They can be Functional such as Prolactinoma, or Non-functional.

How do the pituitary tumors occur?

Don't know. Most pituitary tumors occur spontaneously without any underlying known cause.
Loss of control. The cells of our pituitary gland are constantly producing and simulating and functioning within defined limits. Sometimes, these limits break down with a loss of control. The exact cause for this loss is unclear. But when it occurs, the normal function gets out of control, normal growth gets out of control, and normal production gets out of control. These collections of cells become tumors.

Why are pituitary tumors so common?

1 in 5. Almost 20% may have pituitary tumors but most will remain undetected as they do not cause any symptoms. Those that grow large enough to cause symptoms due to size or secrete enough of one of many hormones that the pituitary normally secretes may need to be treated with medicines or surgery. Prognosis is generally good. Visit: http://www. Ncbi. Nlm. Nih. Gov/pubmedhealth/pmh0001723/.
Fate. Our organs are very active. The cells throughout our body are stressed and need to be replaced. At times this replacement process gets out of control. Instead of normal replacement cells tumors may develop. Active glands are prone. Thyroid, adrenal, ovary, testes, pituitary, gi, lung, blood cells, all can suddenly convert to cancer. How we normally keep under control is a mystery.