question: I was recently diagnosed with breast  cancer.  DCIS, grade 3, estrogen and progesterpne receptive.  Surgery is scheudled for next week, just a lumectomy.  At the same time I was told to get a biopsy for breast cancer, the surgeon thought my thyroid felt enlarged and ordered an ultrasound which I just had done.  It showed a nodule on my thyroid.  The radiologist recommended a repeat ultrasound in three months.  I have read that breast cancer can spread to the thyroid.  Since my cancer is in situ based on the biopsy, is it still possible it has spread to the thyroid?  Should I be insisting that more testing be done to be sure the nodule isn't cancer or is it OK to wait three months?