Abstract
Background: Cesarean scar pregnancy (CSP) is a rare and dangerous ectopic pregnancy. CSP is a late severe complication of cesarean section. In recent years, with the introduction of the comprehensive second birth policy in China, the incidence of CSP and recurrent CSP has increased. However, there are no clear data available regarding the risk factors related to recurrent CSP in the literature. To identify risk factors and incidence rates for recurrent CSP. Methods: A total of 1000 CSP patients were followed up for 66 ± 19.5 months. Among them, 86 developed recurrent CSP during the follow-up period (group 1), and the remaining without recurrence were group 2. The clinical data of these cases were reviewed in this retrospective study. Results: The incidence rate of recurrent CSP is 8.6%, and the risk factors were a history of ectopic pregnancy and prior abortions. The incidence of RCSP in patients >-35-years-old was significantly lower than that in patients <35-years-old (P=0.031).Conclusions: Previous ectopic pregnancy is an independent risk factor for RCSP. Additionally, the higher the number of induced abortions, the higher the incidence of RCSP.