[Cancer screening with PET: advantages and limitations].

Warburg first reported that tumours are characterized by abnormally increased glucose metabolism accompanied by increase production of lactate. This is a basic principle underlying cancer detection by the glucose analogue 18-F-fluoro-2-deoxy-D-glucose (FDG). FDG positron emission tomography (PET) is currently used widely to examine virtually any part of the body in order to detect tumours, e.