Which initial test is best to evaluate a breast mass in a woman under 30?

• A. Mammogram
• B. CT scan
• C. Breast ultrasound
• D. Biopsy

Answer: (C)

In evaluating a breast mass in a woman under 30, breast ultrasound is considered the best initial test due to its effectiveness in distinguishing between solid and cystic masses. In younger women, breast tissue is typically denser, which can make mammograms less effective at providing clear images. Ultrasound provides valuable insight without exposing the patient to ionizing radiation, making it a safer and more suitable option in this age group. Additionally, ultrasound can guide further assessment or procedures if necessary, such as aspiration of a cyst or obtaining tissue samples for biopsy if indicated.

Mammograms, while effective in detecting breast abnormalities, are usually recommended for older women due to the reasons mentioned. CT scans are generally not utilized for breast evaluation as they focus on different aspects of health and do not adequately characterize breast masses. Biopsy, while crucial for definitive diagnosis, is typically not the first step unless there are specific indications that necessitate immediate sampling of the mass. Therefore, initiating the evaluation with breast ultrasound aligns with the best practices in managing breast masses in younger women.