Cesarean scar pregnancy (CSP) is a special ectopic pregnancy

which mainly shows that the gestational sac and/or placenta are implanted in the scar of the previous cesarean section (limited to gestational weeks≤12 weeks). With the progress of medical imaging

CSP is becoming more and more common

with an incidence of about 1∶1 800. In the past decades

with the increase of cesarean section in China

the incidence of CSP has also risen

and especially after the implementation of the two-child policy in China

the harm of CSP to women has been gradually exposed. CSP is a kind of iatrogenic disease

which may cause serious complications during and after the operation

such as uncontrollable massive bleeding

uterine rupture

peripheral organ damage and even hysterectomy

which seriously threaten the reproductive health and even life of patients. Therefore

early diagnosis and treatment are essential for women. At present

there are different opinions on the pathogenesis of CSP

there are no normalized standards and guidelines and good evidence-based medical evidence at home and abroad for the selection of CSP treatment schemes

and there is a lack of randomized controlled studies with large sample size. Therefore

this article will review the etiology and treatment progress of CSP

in order to provide some reference for the selection of CSP treatment.