@ Ray1
Actually most precancerous lessions never become an aggressive cancer.
Even cancer usually don’t kill - for example: prostate cancer and thyroid cancer are quite often present in people 80 years+, but they kill very rarely (prostate cancer is seen in most of people above 70, but only about 2% will die from it)
It is called overdiagnosis (when diagnosis is correct but still nothing will happen from that - doctors prefer to overdiagnose than underdiagnose, because it is hard to tell which precancerous lession will become cancerous and which won’t)
For example: Thyroid cancer diagnoses in South Korea increased 15-fold between 1993 and 2011 - but amount of people who died from thyroid cancer is the same - but now 15x more people know that they have the disease