Application of color Doppler ultrasound in the diagnosis of cesarean scar pregnancy

Objective: To evaluate the value of color Doppler ultrasound in diagnosis of cesarean scar pregnancy.Methods: We analyzed retrospectively the data of 21 patients who were diagnosed as a cesarean scar pregnancy from December,2008 to October,2011 at affiliated hospital of Jining medical college and analyzed the ultrasonographic features of cesarean scar pregnancy.Results: Eighteen of 21 cases were correctly diagnosed of cesarean scar pregnancy by ultrasound.The accuracy of ultrasound diagnosis of cesarean scar pregnancy was 85.7%(18/21).One case misdiagnosed as cesarean scar pregnanly was trophoblastic disease confirmed by pathology.The misdiagnose rate was 4.8%(1/21).Two cases of cesarean scar pregnancy were missed and diagnosed as cervical pregnancy and incomplete abortion respectively by ultrasonography.The missed diagnose rate was 9.5%(2/21).The ultrasonography of cesarean scar pregnancy can be divided into three types: gestational sac type(10 cases),gestational sac-like structure type(5 cases) and mixed mass type(5 cases).Conclusion: Color Doppler ultrasound is important in the diagnosis of cesarean scar pregnancy,and can provide important reference information for early clinical diagnosis and treatment.