Hi, the second round of radio was in the area that had not had radio first time - first time was just the breast - second time to armpit and shoulder area. They cannot do two lots of radtio to same area. Given the surgery has not removed the nodes in should collarbone area that showed up in pet scan the consensus seems to be that my cancer is treatment resistant and they would prefer to keept he taxane chemotherpay up their sleeve shoulod something else pop up - so the PET CT is probbably necessary for me - also seems possible that breast cancer marker CA153 may be an early indicator for me if curren tblood test result returns to my earlier levels - if it doesnt then it isn't - if it does then we will do that every three months and if it jumps then a PET CT is indicated it seems. Anyway getting on with life - off to get hair trimmed. Have a good day. Caroline