Leukemia is a malignancy of hematologic disease characterized by replacement of normal bone marrow by abnormal blood cells or leukemic cells,it is caused by the uncontrolled proliferation of leukocytes. It is a malignant neoplasm that most common in children.The aim of this study is to describe profiles of leukemia in children in Arifin Achmad General Hospital of Riau Province period 2013-2014.…