Breast Cancer Follow-Up: What You Really Need to Know (from a Multidisciplinary Breast Cancer Team)

Based on evidence-based medicine, among the many tests people often associate with “follow-up,” only two have clearly been shown to improve long-term survival: regular clinic visits with a physical exam and routine mammography. The reason is straightforward. These two tools help detect local disease in the breast area earlier, including recurrence in the same-side breast, disease in the underarm lymph nodes, or a new cancer in the opposite breast. In contrast, doing too many tests that are not medically indicated has not been shown to help and may actually increase patients’ anxiety and distress.

It is also important to understand what most strongly affects prognosis in breast cancer. For most patients, outcomes largely depend on the stage at the time the cancer is first diagnosed. In other words, early detection and timely, appropriate treatment are key to achieving good control. However, if follow-up testing discovers distant metastasis (for example, to the liver, lungs, bones, or brain), treatment at that point is no longer something that surgery alone can address.

In metastatic breast cancer, what most influences outcomes is typically which organ is involved and how the cancer responds to systemic therapy, such as chemotherapy, endocrine (hormone) therapy, and targeted therapy, rather than exactly how early the metastasis is detected. With ongoing advances in new medications, breast cancer treatment continues to improve. Combined with strong determination, courage, and appropriate medical care, these developments can support patients in facing the disease in a proactive and hopeful way.

For these reasons, after reviewing international standards for breast cancer follow-up and taking into account differences between patients in Taiwan and those in other countries, our hospital has developed stage-specific follow-up plans. We also want to emphasize an important point: every imaging test has limitations, and no scan can guarantee detection of every tumor. That is why we strongly recommend monthly breast self-exams and becoming familiar with symptoms that could suggest distant spread. If you notice anything suspicious or feel uncertain about a symptom, contact your treating physician as soon as possible.

Symptoms that warrant prompt attention include a new lump in the breast, bone pain, chest pain, shortness of breath, a persistent cough, unusual fatigue, abdominal pain, persistent headaches, and problems with balance or coordination.