Breast Cancer Screening in Pregnant and Lactating Patients: A Practical Guide

Mammography is safe but less sensitive in pregnancy/lactation. Ultrasound is first-line for symptoms but its screening role is uncertain. MRI is contraindicated during pregnancy, may be used in lactation for high-risk. Balance diagnostic performance with maternal and fetal safet…

• Mammography sensitivity is reduced because hormone-related density may obscure lesions.
• Ultrasound serves as primary modality for symptoms; its role in routine screening remains uncertain.
• MRI is contraindicated in pregnancy but may be used during lactation for high-risk screening.

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