Recurrence in the neck lymph nodes

I’m a breast cancer survivor and recently I discovered a lump on my lymphnode on the neck. Had biopsy done and confirmed its cancerous. CT scan was done and found some nodules in lungs. Was on tamoxifen so was switched to Arimidex. My doctor said to wait for 3 months to see how I respond to Arimidex. Had blood test done last week and saw my doctor yesterday. My CA153 increased to 127 from 77. Doctor said its quite normal as will need to take 3 months for body to respond to Arimidex. Went for 2nd opinion and was told to have lump removed and do 6 cycles of radiotherapy. My question is what shall I do? Shall I wait for another 2 months to see if I’m responding to Arimidex or shall I proceed to have the lumps removed and do 6 cycles of radiotherapy? Would appreciate any help you can extend to ease this confused and anxious mind. Thank you.

THE BREAST DOCTORS SAY:

It would be useful to discuss your options with your doctors in a multidisciplinary setting.  Switching to Arimidex is a good option and many hormone responsive tumours will respond to a switch to hormone treatment.  Surgery to remove the lymph nodes with radiotherapy will not control the nodules in the lungs.  If you respond to Arimidex, both the lymph nodes and lung nodules might reduce in size.  If there is no response to Arimidex, then local control with removal of the lymph nodes (if they are getting bigger) and radiotherapy can be considered.