A breast nodule is neither benign nor malignant, and is not a name for a disease, nor is it meant to be equivalent to any kind of diagnosis. A nodule is really just a description, describing an abnormality found on imaging. On imaging it can be a small shadow, and this small shadow is described as a nodule, or if it is a large shadow it can be called a lamellar shadow or a mass. What exactly is the small imaging shadow and what is the corresponding pathological tissue, unless this nodule is taken out and sent to pathology, we can finally get a 100% accurate diagnosis, so breast nodules are definitely not equivalent to tumors. If a breast nodule is punctured, it is possible that the puncture result is a common benign tumor of the breast, such as breast fibroadenoma, or the puncture result may be malignant, such as breast cancer. All nodules, which are really just an imaging finding, are very common. Not all imaging findings of small abnormal nodules require puncture and excisional biopsy. Generally, clinical follow-up for nodules with low risk, i.e., high benign potential, is usually taken for observation. If there is a certain possibility of malignancy, puncture or excisional biopsy is recommended to clarify the nature immediately.