To tell you the truth I dont know how far they went I was knocked out. The Dr told me it wasnt a big problem but to quit smoking which I did but started 5 years later trying to quit again. I went back a few times and there was no recurrence so I stopped. I dont know. Last night I was kind of freaked out but today I have a better perspective. I will go for the test and follow through with the process. I wont have a choice my wife knows and she is the one person that can get me to do something I dont want to do. Her and my son