The presence of a burr sign on breast imaging is not necessarily a malignant tumor. Burrs can also be seen on imaging when breast hyperplasia forms a nodule or inflammatory breast disease. The burr sign refers to the presence of different degrees of spinous protuberance at the edge of a breast lump on chest radiograph or CT scan. The burr sign is a poor description of the breast, but in addition to malignant tumors, certain benign breast diseases such as granulomatous lobular mastitis, necrosis of breast fat, and nodules formed by breast hyperplasia may also present with the burr sign. Therefore, it is not feasible to judge the benignness or malignancy of a lump simply from the presence or absence of a burr, but should also take into account the internal echogenicity of the lump, as well as its size, blood flow, and so on. However, the diagnosis of breast cancer requires pathological examination, such as puncture for pathology or pathological examination after breast lump excision. Pathological diagnosis is the gold standard for breast cancer diagnosis, and other examinations can only consider breast cancer or highly suspect breast cancer. If the patient is found breast burr sign by imaging examination, it is recommended that the patient go to regular hospital and improve relevant examination so that the doctor can rule out or diagnose it, and the patient should not diagnose it by himself in order to avoid delaying the condition.