Recently Bergenhenegouwen L,Vlemmix F et al published in the journal Obstetrics & Gynecology the results of a cohort study on pregnancy outcomes in preterm breech infants delivered vaginally versus by cesarean section. The main objective of the study was to examine the relationship between the choice of delivery method and perinatal morbidity and mortality in breech preterm infants. The study population was singleton breech preterm infants, and the investigators included a total of 8356 study subjects between 2000 and 2011, divided into different subgroups according to gestational weeks, followed by a multifactorial regression analysis of perinatal outcomes by delivery method. There was no significant difference in perinatal mortality for cesarean deliveries (1935) compared with vaginal deliveries (6421) (1.3% vs. 1.5%, OR 0.97, 95% CI 0.60-1.57). However, there was a significant reduction in overall perinatal morbidity and mortality among those who delivered by cesarean section (8.7% vs. 10.4%; OR 0.77,95% CI 0.63-0.93). Among newborns delivered at 28-32 weeks, the perinatal mortality rate was only 1.7% for cesarean deliveries compared with 4.1% for vaginal deliveries (OR 0.27, 95% CI 0.10-0.77), and the total perinatal mortality rate and the incidence of critical illness were significantly lower for cesarean deliveries compared with vaginal deliveries (5.9% vs. 10.1%, OR 0.37, 95% CI 0.20-0.68). The study suggests that cesarean delivery is effective in reducing perinatal morbidity and mortality in pregnant women with singleton breech preterm birth.