Kostas Papagiannopoulos's surgical list includes 79-year-old Barry, who has a suspicious growth on his lung. Previous attempts to diagnose it have failed, so Kostas uses keyhole surgery to remove a section of lung before sending it off for immediate analysis, waiting in theatre in case he has to proceed further. Meanwhile, Andrew Hogarth treats 52-year-old Roger, who has been on the cardiac ward for a week with a life-threatening infection.