My daughter Katie is 2 and has a growing optic glioma impacting the chiasm. Her latest MRI indicates some "enhancement" in the chiasm. I know this is not good - but am a little unsure as to what this means. Does it mean the tumor is gaining mass or getting thicker? Is it changing / growing? If anyone has experience with enhancement in the chiasm - what did this mean for you?...I am assuming this means we will likely start chemo soon, but is this always the case?