I can help a bit. First I want to welcome you to Neuro talk. You will find alot of support here, no matter what the medical issue. I did a bit of digging around about your condition. Cavernous angioma is what happens when there is a slow blood vessel. Not getting enough blood flow. In Kids it is usually intracranial, in adults it is spinal. Ependymoma usually is in the 4th ventrical. The MRI should show that. AVM is an abnormal group of blood vessials and they will want to make sure that is not occuring. They also mentioned intracranial cavernous angiomas, and may want to check with a scan there too, just to make sure you are OK. Ask all the questions you can to your doctor. Keep a journal of any symptoms you have and that will help your doctor too with treatment. I can research that for you also if you would like. I am here and I do care. Take good care of yourself. ginnie