Breast nodule 6.6*3.9, may be 6.6mm*3.9mm, breast nodule will rarely reach 6.6cm*3.9cm, need to actively consult a doctor to check and take medication to adjust, if the nodule continues to increase, it is recommended to consult a doctor to listen to the professional advice. 1. Active examination: When you find breast nodules of 6.6mm*3.9mm, you can take the lesion tissue by fine needle puncture to do pathological section examination, which can further clarify the pathological nature of the nodule tissue. 2. Taking medicine to regulate: if the breast nodule is 6.6mm*3.9mm, it is recommended to take Chinese medicines such as Breast Fetish Granules or Easy Pills as prescribed by the doctor to actively regulate the situation, which will help the nodule to decrease gradually. 3. Surgical excision: Sometimes the severity of breast nodules is higher, with abnormal symptoms such as nipple bleeding, breast pain and low-grade fever, and surgery is needed to remove the diseased tissues, and consider expanding the scope of excision if necessary. Breast nodules may have an impact on women’s health, usually need to maintain a relaxed mood and avoid overwork, once found breast nodules, need to consult a doctor for examination and take appropriate treatment measures as soon as possible to prevent malignant changes in later stages.