Cesarean scar ectopic pregnancies (CSP) are a rare but increasing form of ectopic pregnancy with an incidence of approximately 1:1800 to 1:2226 births. 1,2 The rising incidence is likely secondary to the rising rates of cesarean birth, improved ultrasound diagnosis, and increased clinician awareness. 3 A CSP is defined as the implantation of a pregnancy within the myometrium of the uterine scar of a previous cesarean birth and can be divided into two categories. Type one (endogenic) is where the pregnancy grows towards the uterine cavity, and type two (exogenic) is where the pregnancy invades deeply into the uterine scar towards the abdominal cavity and bladder. 4 Early detection is important because of the associated morbidity and mortality related to complications such as bladder invasion, uterine rupture, life-threatening maternal hemorrhage, and hysterectomy. 5,6 Current management options are based on case findings of reports and cohort studies, with little consensus regarding the optimal approach. Early intervention rather than expectant management is advised, with various treatment regimens involving medical, surgical, or a combination of interventions individualized based on patient factors, clinical presentation, access to resources, and local expertise. Recent studies have suggested that surgical treatment is best practice, 2,7-9 but initial management at our institution has been medical.The aim of our study was to review the management, success, and complication rates of women with a CSP at an Australian tertiary maternity hospital over a 15-year period.