I am almost 40 yrs old, I had an MRI 1 1/2 weeks ago because I have been really bad headaches. My doctor told me I had no tumors or cancer, no signs of anyurism or stroke, no bleeding. There was however gliosis found. He was kind of evasive on the issue, but told me usually it means nothing, but they want to run another one in 6 wks to 3 months. If nothing has changed, then it probably means nothing, but if something has changed, they will run more tests, but he didn't say for what? I have 6 kids at home, and a husband currently in the hospital. Can you please help me understand what this is, to either put my mind to rest from the worrying, or what further testing they would possibly be. Diabetes & thyroid problems run on my bio mothers side, and on my fathers side, the only thing I know of is that my grandmother died from a brain anyurism, and my grandfather had macular degeneration in his eyes.