Cesarean scar pregnancy mimicking malignant tumor: a case report.

BACKGROUND Ectopic pregnancy in cesarean scar is rare, however it is occurring with increasing frequency. These ectopic pregnancies can cause serious complications such as severe bleeding, uterine rupture, disseminated intravascular coagulation and maternal death. We present a case of cesarean scar pregnancy diagnosed during laparotomy with frozen section. CASE A 26-year-old woman, gravida 3, para 3, was admitted to our gynecology clinic because of a 6-week history of irregular vaginal bleeding and anemia. A solid mass originating from the cervix was detected on ultrasound examination. Doppler ultrasound revealed an increase in blood supply. The case was managed by laparotomy. The solid mass was removed and the uterus preserved. CONCLUSION Although ultrasound is useful in the detection of a typical scar pregnancy, ultrasound images can lead to a misdiagnosis, such as sarcoma or myoma, in some cases. Cesarean scar pregnancy should be considered in the differential diagnosis when an extremely vascularized and exophytic mass located in the isthmic region is detected.