I'm sorry your having such a difficult time sorting out the meds. It's so hard to know if your making the right choices. I have read that the swelling can come an go rapidly with this type of tumor and the bleeding is from the tumor growing and the blood vessels detaching. I am not familiar with the dex you are using but it sounds like you have good luck with it. My continued thoughts and prayers are with you and know that your sweet boy loves you for all the great care and love you are giving him.