Radiotherapy for pituitary tumors mainly refers to gamma knife treatment, which costs about $20,000 to $30,000. Radiotherapy for pituitary tumors has a very important role as a means of pituitary tumor treatment. If the pituitary tumor is large and it is difficult to remove it surgically, radiotherapy can be given before surgery and then removed surgically after the tumor has shrunk, which will be less difficult and the tumor can be cut more completely. In addition, if the patient is in poor condition and cannot tolerate general anesthesia or if the patient refuses surgery, radiation therapy can also be considered. In addition, because pituitary tumors are recurrent, surgery is preferred for recurrent pituitary tumors, and radiation therapy should be considered again after surgery, because it can cure the residual tumor cells more completely.