Frankie,
When my son was 4 years old he began having terrible headaches. After an emergency CAT scan and numerous MRI's we were told that he had a "spot" on his brain. More tests and more tests and then they told us he also had a heart problem and needed heart surgery. They continued to monitor the "spot" while he had heart surgery. The result of all this: - the surgery fixed his heart and he bounced back really quickly. They watched the ''spot" for a couple more years and finally decided that some people are just born with "spots" that don't develop into anything - the head aches were migranes. My son is now a healthy 22 years old and has never had another problem. I wish your grandson the best and will add him to my prayers.