What's up with Sam's grandma?

"Lung cancer is explained in graphic novel format in this informative story that makes the science behind cancer accessible to young readers. The Medikidz are larger-than-life superheroes who live in Mediland, a living, moving virtual world within the human body. Each character is an expert on one component of human anatomy and the role it plays in fighting the disease. Using their extensive combined knowledge, the Medikidz conduct a journey through Mediland, exploring complex medical issues in a language and visual style that is attractive and accessible to tweens and teens. Appropriate humor and adventure are blended with accurate facts, so young readers can understand lung cancer and its causes"--Provided by the publisher.