Avascular necrosis of bone in children with all

Treatment advances have resulted in increased survival of children with Acute Lymphoblastic Leukemia (ALL). Increasing success in the treatment of ALL has lead to the increasing awareness of potentially disabling sequelae of the therapy, like Avascular Necrosis of Bone (AVNB). We present 4 cases, who developed AVNB as a sequel to treatment of ALL, and the relevant litreture is discussed.