Relaxing in his family's Green Valley home, Michael McIntosh looks like any other modern teen, with his braces, sweatshirt and baggy pants.

No one outside his circle of friends and family would ever guess that the 17-year-old has been through a gruelling battle with a brain tumor. But when he takes the hood of his sweatshirt down, there is a scar from the ordeal on the back of his head.