Medical experts from the UN refugee agency warned in a study that the number of refugees with cancer is overwhelming health systems. The UNHCR calls for more to be done for Syrian refugees with cancer. The picture brings the current situation to mind: Four-year-old Syrian refugee Zacharia lies dying of a brain tumor as his mother gives him water and his siblings look on with love and concern. He had been receiving treatment in Syria, but in Lebanon his health deteriorated dramatically (© UNHCR/L. Addario).