il ■ EXAMINATION: Full fielded digital mammography (FFDM)、Bilateral breasts、CC、MLO ■ INDICATION: Screening ■ BREAST COMPOSITION: Type d. The breasts are extremely dense, which lowers the sensitivity of mammography ■ FINDINGS: - No significant masses, calcifications, or other abnormalities are present. ■ COMPARISON: Nil、Non-available ■ IMPRESSION: No significant masses, calcifications, or other abnormalities are present. ■ ASSESSMENT and MANAGEMENT: BI-RADS Category 1:Negative — Routine mammography screening But due to extremely dense breast, suggest breast ultrasound for further evaluation. Note: The false negative rate of mammogram is around 15%.