According to a study published in the The Lancet Oncology journal, nearly one in two children with cancer worldwide are never diagnosed. An analysis of childhood cancer cases in 200 countries has revealed that they are left untreated. According to researchers from the Harvard University, access to health care is not always available and is a major cause for undiagnosed cancer cases. Between 2015 and 2030 there will be 6.7 million new cases of childhood cancer worldwide. There is an urgent need for health services to strengthen across the world.