You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 45-year-old premenopausal woman undergoes a left breast lumpectomy for a 1.5 cm, lymph node positive, hormone sensitive invasive breast cancer. She receives chemotherapy, radiotherapy, and is on tamoxifen. Recommended follow-up after therapy should always include: and explain in detail?
Follow-up after breast cancer treatment is very variable. There is no consensus and no follow-up test has shown a survival advantage. Routine 3-6-month clinical examinations and yearly mammography should always be performed. The use of tumor markers such as a CA15-3has not shown any proven significant value and may lead to unnecessary worry.