brave finley lamb suffers from rare brain abnormality periventricular heterotopia - which means many of his ` grey matter ' cells have not migrated to the correct position .
it left the boy , from wallasey , merseyside , unable to walk and talk , and with a 90 per cent chance of developing epilepsy .
finley lamb , five , pictured with his dad dan and mother sara , suffers from a rare brain abnormality .
he is also highly likely to suffer heart , lung and bowel problems that