Luckily, says pediatric oncologist Lucas Moreno, childhood cancer affects few patients. There is one cancer in children for every 200 in adults. It is a minority disease or, rather, a group of diseases because there is not just one cancer, there are 40 different types.
Its low frequency makes it more difficult to research, find the resources, and gather the data that is needed. In the last decade, there has been a very significant advance in the knowledge of what happens in tumors. We have not found the causes for why they are produced, but we have identified what happens for them to grow.
Children's cancers are totally different, and environmental factors do not influence them. They are developmental alterations. Some cells that do not function very well are left over from embryonic development, and at some point they begin to grow.
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