The disappearance of all grade 3 breast nodules at age 57 may be related to changes in hormone levels, diet, and deviations at the time of examination. 1. Changes in hormone levels: Breast nodules may worsen before menstruation due to changes in hormone levels, while 57-year-old women may have already gone through menopause, so it may be possible for breast nodules to disappear. 2. Diet: If the breast nodule is a benign lesion, the nodule may heal or even disappear if the diet and lifestyle are adjusted in time. 3. Deviation in examination: If the breast nodule suddenly disappears at the third level, we should also consider whether there is a possibility of deviation in the examination result. For example, in the case of breast hyperplasia, the ultrasound image suggests uneven granularity, which may be misinterpreted as a breast nodule, plus the results of different examiners may be slightly different, so it is recommended to review the examination in time.