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Pituitary adenomas are tumors that occur in the pituitary gland. Most pituitary tumors are benign, approximately 35% are invasive and just 0.1% to 0.2% are carcinomas . [ 1 ] Pituitary adenomas represent from 10% to 25% of all intracranial neoplasms , with an estimated prevalence rate in the general population of approximately 17%.
In medicine, proton therapy, or proton radiotherapy, is a type of particle therapy that uses a beam of protons to irradiate diseased tissue, most often to treat cancer.The chief advantage of proton therapy over other types of external beam radiotherapy is that the dose of protons is deposited over a narrow range of depth; hence in minimal entry, exit, or scattered radiation dose to healthy ...
Brunswick sold Mongoose to Pacific Cycle in 2000 and Pacific Cycle was bought by Montreal-based Dorel Industries in 2004. As of 2018, Mongoose models are available through Pacific Cycle in Madison, Wisconsin. [2] On 11 October 2021 Pon Holdings, headquartered in Amsterdam, the Netherlands announced that they acquired US-based bike company Dorel ...
Many pituitary tumors (25%) are found to have areas of hemorrhagic infarction on MRI scans, but apoplexy is not said to exist unless it is accompanied by symptoms. [1] [4] In some instances, lumbar puncture may be required if there is a suspicion that the symptoms might be caused by other problems (meningitis or subarachnoid hemorrhage).
A prolactinoma is a tumor of the pituitary gland that produces the hormone prolactin.It is the most common type of functioning pituitary tumor. [1] Symptoms of prolactinoma are due to abnormally high levels of prolactin in the blood (hyperprolactinemia), or due to pressure of the tumor on surrounding brain tissue and/or the optic nerves.
The case arose in a dispute between Mayo Collaborative Services and Prometheus Laboratories concerning a diagnostic test. Mayo Collaborative Services is a for-profit [6] diagnostic testing lab offering diagnostic services that operates as a subsidiary of Mayo Foundation for Medical Education and Research, [7] which is a nonprofit corporation [8] affiliated with the Mayo Clinic.
Nelson's syndrome is a disorder that occurs in about one in four patients who have had both adrenal glands removed to treat Cushing's disease. [1] In patients with pre-existing adrenocorticotropic hormone ()-secreting pituitary adenomas, loss of adrenal feedback following bilateral adrenalectomy can trigger the rapid growth of the tumor, leading to visual symptoms (e.g. bitemporal hemianopsia ...
By the late 1970s, a new bicycle sport begun by enthusiasts in Northern California had grown into a new type of all-terrain bicycle, the mountain bike. Mountain bikes were originally based on Schwinn balloon-tired cruiser bicycles fitted with derailleur gears and called "Klunkers". A few participants began designing and building small numbers ...