a control mechanism in the body whereby production of a hormone is switched off when levels in the bloodstream become too high.
of or to do with the nervous system.
a procedure on the brain or nervous system.
a chemical in the body with a job of relaying messages between nerve cells (neurons).
a lump or growth found on a tissue in the body.
a type of investigative procedure using small amounts of radioactive materials, which are attracted to bones or tissues. Special cameras pick up the emitted gamma rays, which are turned into computer images of the body parts being examined.
Nelson's syndrome is the name given to the enlargement of a pituitary gland tumour associated with excess secretion of adrenocorticotropic hormone following the surgical removal of both adrenal glands, usually to treat Cushing's disease.
Non-functioning pancreatic neuroendocrine tumours (NETs) are tumours that originate in specialised cells of the pancreas.
Non-functioning pituitary tumours are the most common benign growths in the pituitary gland. These tumours are usually identified because of impaired vision or hormone deficiencies.