i have been diagnosed with an olfactory mennigioma and i am 56 in ok health until this, previous smoker and was told there is swelling and the tumor is benign,am cosidering the gamma knife but i feel definite no to open craniotimy surgery and i have a very good neuro surgeon, according to research, but im still hesitant,and i cant fifure it out but i do know that i have always had headaches as far as i can remember, even under ten years old i would tell my parents i had a headache