Introduction
Over the years, the most of children with acute lymphoblastic leukemia (ALL) are survived due to more intensive chemotherapy, improved supportive care and better followed-up statuses. The improved survival rates of childhood cancers increase the long-term risks of chemotherapy and radiotherapy. Unfortunately, the risk of secondary cancer is three to 10 times higher in childhood cancer survivors than the general population (1-3). Besides that the survivors of pediatric acute lymphoblastic leukemia (ALL) who were treated without radiation, the risk of second cancer may be less than 1% at 20 years. Ewing sarcoma family tumors (ESFTs) has constituted 2% of childhood cancers and are uncommonly noticed as a second malignancy. An unusual entity of ESFTs is Askin Tumor which localized in the thoracopulmonary region and mostly seen in children and adolescents (4-6).
We report the case of a 10 year-old girl with Askin Tumor who had a history of ALL at three year old.