Pituitary gland is referred to as the master gland in our body. It is called so because the hormones releasing by this gland affects almost all functions in our body.Tumors which form in the pituitary gland are called pituitary tumors. Most pituitary tumors are non-cancerous and do not spread to other parts of the body. So these are called pituitary adenomas. But it can create significant health problems.