PET/CT shows nodule

I tried to post this earlier, but must have sent it to the ozone layer.
Three and a half years ago I was diagnoseed with stage 1 breast cancer. On the diagnostic scans, a 7x9mm lung nodule was found. I have a history of positive PPDs, but asymtomatic. Foowling a mastectomy and chemotherapy the scans were repeated and nodule was still there. Last week I had the scans again, as follow-up, and the nodule was again identified, this time reading as 11x13. I feel reassured that a cancer would certainly have grown more than 4cms (equally) over a three and a half year period. I have been given the option of having a lung biopsy (which does not thrill me) or waiting and have another CT in three months. What are your thoughts on this?

[carme]

See my post from 5/9/09.
Carme