Main findings
The current study revealed that pain at the adenomyosis site occurred in 13.2% of all pregnancies with adenomyosis. Moreover, the onset of adenomyosis pain was associated with adverse perinatal outcomes, including PE that resulted in preterm delivery and a high cesarean delivery rate. Among women with adenomyosis pain, the maximum CRP level was significantly high among those who developed PE, which preceded the onset of PE for a median of 15 days.