Eric,
Interestingly enough there is another thread titled "2 Questions" (that I hope I have given the link to here) that also addresses the issue of scans etc. I do believe there are probably many of us whose oncologists do not scan, test etc. unless there are symptoms. I am comfortable with this but I am stage 1. If I were higher I would probably feel differently.
Best wishes to you & Caryn,
Marlys
http://her2support.org/vbulletin/showthread.php?t=25791