Am in hopes that someone else has had this experience. During the past year I have had eye issues (uvetitis) and have found a super retina specialist who stated all indications were that I am fighting sarc. Within two months, I had a retina detachment and was recovering nicely.. as the predisone dosage was being reduced I found myself in a fog like world... very forgetful, headaches. My visit to my regular Dr. suggested a full blood work up and an immediate mri... the mri came back with an enhanced mass on the frontal lobe. I will be having a full CAT scan tomorrow and then an appt. with a nuerosurgeon.... THey have all indicated that indications are that this is a cancer related issue. So far the Dr.s have said, we have never seen sarcoidois in the brain... without having brain surgery, how do you know if it is cancer or sarc? All blood work ect is acceptable .