It's certainly a theory. On the one hand, the body is not that 'partitioned'. Prostate cells have access to go elsewhere already via the blood vessels, etc. that supply it. It may be that some do all the time, but the body's immune defenses generally catch and kill those that migrate out of place.
On the other hand, particularly with PCA, it tends to be slow growing and remain in place. Otherwise, most of us here would have been in even more trouble than we are/were. So, it could be that the capsular wall of the prostate acts as a reasonably effective barrier for some period of time. In which case, the biopsy tracks could, in fact, be trouble.
But, I don't believe anyone knows. I personally guess its more the former than the latter and eventually, as the tumor(s) get bigger, the number of escapee's eventually beat the odds of getting caught by body defenses. But I have absolutely no evidence of this, it just sounds like a good theory to me.
Unfortunately, there is no other definitive test than the needle biopsy. I was very surprised at the time that this was so (but then, I thought the whole thing was just a nuisance and that nothing would be found). Man, talk about
change of life! As I'm sure is true with most here, I went through a range of emotions I never knew I had. So much for the old self reliant, macho self image. Now I wake up with a "hey I'm still here" attitude every day that I'm sure is better than the 'take it for granted' of before. While I hope to get back to as close to 'normal' as possible, I hope that part lasts.
PSA at Dx: 8.2
DaVinci RALP: 10/31/08
Negative margins, no extra-capsular involvement
One nerve spared
No follow-up PSA yet (next week).