If incidences of cancer of any type are 1 in 100,000 for the population at large, then generally any slice of that population will have similar odds. Which incl

If incidences of cancer of any type are 1 in 100,000 for the population at large, then generally any slice of that population will have similar odds. Which includes people with cancer. So those who already have cancer, have a chance to develop a second cancer. It is very not fair.