question: Hi, My Brother has advanced stage lung cancer that has moved to his liver. Prior chemo and radiotherapy did nothing to the tumour. He had no side effects from both treatments, other than hair loss & a bit tired.His pain is starting to get a little worse and he is started a new mix of chemo tomorrow for the liver. It will be once a week for 6 weeks. He wants to take a 4 hour flight to see a friend during treatment. Will this be ok? Thanks, Lisa.