54 % van door screening ontdekte tumoren zou gwoonlijk niet ontdekt
worden(Draisma 2003)
Overdiagnosis does
not exist……
No pattern 4 or 5,
less than 2 positive cores
So in nearly 70 % of
men with PSA < 3 minimal tumours are found that might be non-threatening
This corresponds
with the estimated lead time and calculated overdiagnosis
In round 2 less
tumours are detected (40 % of round 1), tumours are smaller, and minimal
tumours are more frequent. This reflects more the ultimate status of the
population after the first selection
