If the dimple sign is found in the skin of the breast, which is a localized depression of the skin of the breast, it is more likely to be a malignant tumor. The reason for this is that the development of tumor involves the suspensory ligament of the breast, which leads to localized skin stretching and localized dimpling and dimple sign. Ultrasound or mammography can reveal irregularities in the margins of the lesion, with obvious burr and lobar signs, and even scattered signs of calcification. For malignant tumors of the breast, the most effective treatment for early diagnosis is radical resection surgery, and regular follow-up and observation are required after surgery.