What is the next best step when evaluating a breast mass during pregnancy?

• A. Mammography
• B. Fine needle aspiration immediately
• C. Ultrasound
• D. Excisional biopsy

Answer: (B)

When evaluating a breast mass during pregnancy, the next best step is to conduct a fine needle aspiration. This method allows for the collection of cells from the breast mass for cytological analysis. It is particularly useful because it has a lower risk and is safer for both the mother and the fetus compared to more invasive procedures. Fine needle aspiration can provide immediate information regarding the characteristics of the mass, helping to clarify whether it is benign or suspicious for malignancy.

Other imaging modalities, such as mammography, may not be the preferred first step during pregnancy due to concerns about radiation exposure, although modified techniques can sometimes be utilized. Ultrasound can be beneficial in characterizing the mass but is typically used as a complementary tool rather than the first intervention. Excisional biopsy is an invasive procedure that may not be necessary at an early stage of evaluation, especially when less invasive methods can provide useful information. Therefore, fine needle aspiration is the most appropriate next step in this scenario.