By Isabelle Tourne and Daniel Lawler When Lucas was diagnosed with a rare type of brain tumour at the age of six, there was no doubting the prognosis. French doctor Jacques Grill gets emotional when he remembers having to tell Lucas’s parents that their son was going to die. However, seven years later, Lucas is now 13 years old and there is no trace of the tumour left. The Belgian boy is the first child […]