Optimal Timing for Breast Ultrasound Examination
B-mode ultrasound (B-US) is a type of ultrasonographic examination. Breast B-US specifically evaluates breast diseases and is one of the most common imaging modalities used in breast assessment. So, when is the optimal time for a breast B-US examination?
Optimal Timing for Breast B-US Examination
Generally, the ideal time for breast B-US is approximately seven days after the onset of menstruation. Compared with other phases of the menstrual cycle, glandular tissue is thinner and softer during this period, making it easier to distinguish pathological changes from normal tissue—thus representing the optimal window for diagnosing or screening breast disease. For postmenopausal women, breast B-US can be performed at any time. Regarding the recommended age to begin routine screening, women aged 40 years and older are advised to undergo annual breast B-US examinations. For individuals at high risk of breast cancer, annual breast B-US screening is recommended starting at age 35.

B-US can detect whether breast masses are present, determine whether such masses are solid or cystic, and assess whether breast ducts are dilated. Based on features including lesion margins, shape, vascularity, and Doppler flow parameters, B-US also aids in differentiating benign from malignant tumors. Additionally, B-US enables evaluation of axillary lymph nodes, allowing preliminary assessment of nodal metastasis. It can also detect accessory breast tissue in the axilla and identify any associated masses.

In patients who have undergone mastectomy for breast cancer, B-US can further assess the chest wall behind the surgical site for local tumor recurrence and evaluate the axilla for lymph node metastasis. We hope this information has been helpful. Wishing you good health and happiness!