J Obstet Gynaecol Can
October 2024
Objectives: To evaluate the association between adolescent and young adult (AYA) breast cancer (BC) and the adverse pregnancy outcomes of preterm birth, small for gestational age birth, cesarean delivery, and preeclampsia, and the effect of fertility treatment on this association.
Methods: Population-based cohort study with universal coverage health data for Ontario, Canada. BC was identified from the Ontario Cancer Registry.