We report the case of a patient who came out pregnancy twelve months after medical and surgical treatment of an ectopic pregnancy in a previous caesarean section scar. The preconceptional management consisted in a saline infusion sonohysterography and a pelvic magnetic resonance imaging. Judging the risks of abnormal placental insertion to be higher in this case compared to a simple caesarean section, a careful ultrasonography with color doppler imaging was carried out. The myometrium fragility caused by the ectopic pregnancy in the caesarean section brought us to recommend a prophylactic caesarean section around 37. The high risks of hemorrhage required a medical center with embolization possibilities. A review of literature in order to define the medical care adapted in this case was come out.