By Jacob Farr A seven year old boy from East Lothian was diagnosed with a brain tumour after visiting the hospital for neck pain. Mason Mackenzie woke up one day in January unable to move due to neck pain, leading his mum, Carly Mackenzie, 26, to call the GP for an appointment. However, Mason couldn’t get out of bed to attend the appointment, so Carly took him to AandE. Doctors discovered that Mason had torticollis, a neck spasm, and gave him exercises to do at home. Carly mentioned that Mason also had headaches, which she thought were related to his autism. The Sick Kids hospital decided to d…