Transcript for NBA Star Makes Children's Wishes Come True
An nba star, pau gasol, seven feet tall. He's one of the top players on the l.A. Lakers. He's also known for his inspiring charity work off the basketball court with st. Jude's children's hospital. And our cameron mathison was there as he made some very special kids' holiday wishes come true. Basketball. Thank you. Reporter: An early christmas. You like pink? Yes. Reporter: For 17-year-old sophie. 12-year-old mohammed. Thank you. Reporter: And other surgery patients at children's hospital, los angeles. Merry christmas. Reporter: Surprised by a visit from nba lakers star, pau gasol. We're talking about trauma cases to kids with cancer. Reporter: What benefit do you notice that you provide for these children that are struggling? I feel like I help make the experience a little better for em. I give them positive encouragement. Very great. Reporter: Yeah. You make people happy when they're struggling, what's better than that? I can draw hearts. You like to draw hearts? All right. I like doing it. Okay. It's really a privilege. Reporter: A privilege education. Whenever gasol makes the rounds, st. Jude's research hospital when the lakers play in memphis, and in l.A. At children's hospital. Gasol spent a year in medical school before pursuing basketball. And both of his parents are in the medical field. He's invited by the head of orthopedic surgery to witness surgery. And here, learns how a spinal operation changed the life of a 6 1/2-year-old girl. She is two inches taller after surgery. Standing up straight. What's interesting is what she remembers about this is that she met pau gasol. I got to meet pau gasol at the hospital when I was in the hospital. Reporter: What was he like? He was seven feet tall. Reporter: Months after surgery, gasol stayed in touch. He actually invited the whole family to a game. That was really fun for all of us. Reporter: Today, gasol's lakers face the miami heat, one of the five game blockbuster nba christmas day matches on abc and espn. Do the people of los angeles have any worry about you being traded anytime soon? I have no idea. I wish I knew. It's definitely a possibility. And it could happen. But life is too short. Life is too sweet and too beautiful to have to worry about those things. Reporter: For "good morning america," cameron mathison, abc news, los angeles.
This transcript has been automatically generated and may not be 100% accurate.