Pregnancy and perinatal outcomes in women with different phenotypes of adenomyosis: A retrospective cohort study

Diffuse adenomyosis and lesion-attached intrinsic adenomyosis are associated with an increased risk of postpartum hemorrhage. Furthermore, placental attachment to an adenomyosis lesion significantly elevates the risk of preterm delivery in patients with intrinsic disease. These findings underscore the importance of phenotype-specific and placental-site assessment for antenatal risk stratification.