Recurrent Pregnancy Loss and Adverse Outcomes in Chronic Intervillositis of Unknown Etiology: A Systematic Review and Meta‐Analysis

CIUE is closely associated with pregnancy loss, fetal growth restriction, and perinatal death and is characterized by a high recurrence rate of approximately 40% in subsequent pregnancies, underscoring its clinical importance in women with unexplained RPL. Early pathological recognition and individualized surveillance may improve pregnancy management and counseling. Further multicenter prospective studies are warranted to define optimal diagnostic and therapeutic strategies.