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Breast Cancer in Pregnancy — SCE Medical Oncology MCQ

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HardBreast CancerBreast Cancer in PregnancySCE Medical Oncology

A 35-year-old woman is diagnosed with HER2-positive breast cancer at 28 weeks gestation. What systemic therapy can be safely given during 2nd/3rd trimester?

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Correct answer: DAnthracycline-based chemotherapy without trastuzumab

Anthracyclines are safe in 2nd/3rd trimester. Trastuzumab is CONTRAINDICATED in pregnancy (causes oligo/anhydramnios). Anti-HER2 agents deferred until after delivery.

Reference: ESMO 2024 Breast Cancer in Pregnancy Guidelines; Amant et al Lancet 2012