The pituitary gland can be found at the base of the brain behind the nose, in a bony box called the sella turcica . It is very close to the optic nerves from the eyes and therefore, occasionally pituitary growths can cause problems with vision. They may also cause headaches. 3 out of 10 (30%) of MEN1 patients will develop a pituitary growth. There are several different types of benign (non-cancerous) p ituitary adenomas growth, which can differ in size (microadenomas of less than 1cm in diameter, or macroadenomas of more than 1cm ). All forms of pituitary growths may be detected using an MRI or CT scan of the head as well as blood tests. Treatment may be in the form of medication or surgery. This will depend upon the type of growth and its size. Sometimes small growths can be treated with tablets or injections although often surgery is needed. The operation to remove a pituitary growth is a relatively small one, and although carried out under general anaesthetic it does not involve having to operate on the main part of the head.