Doctors think the cancer has been developing for the past couple of years, Crowe said, as he has two masses in his stomach, one mass covering 75 percent of his right lung and another mass growing up to his neck, around his heart and throat. Kristina Middleton, Carlos' kindergarten teacher at Bon Air, agreed that she never would have guessed Carlos was sick based on his positive attitude at school. Bon Air students and staff will wear orange - the color for leukemia awareness - on Friday in honor of Carlos, they can wear a hat for $1 and they soon will be selling orange wristbands for $1, with all proceeds going to Carlos' family. Indiana University Kokomo staff and student teachers who work at Bon Air also are planning a way to incorporate a fundraiser for Carlos into the school's family night in March. Just after midnight on Sunday, doctors diagnosed it as leukemia, though the good news is they think it's treatable, according to a GoFundMe page set up for Carlos and his family. Since that diagnosis, Carlos and his mother, Brittney Smith, have been staying at the Peyton Manning Children's Hospital.