Is it common to require herceptin therapy after masectomy? She recently got operated to remove her left breast. She had a 4cm size tumor, the cancer had not spread to the lymph nodes, and she was ER and PR negative, HER positive. She is planning to start chaemotherapy very soon.. and one of the oncologists is suggesting she start taking herceptin as well in parallel.
Any insights on the pros and cons of taking herceptin? What is the best time to start herceptin treatment? What if we decide to not use herceptin?