Application value of 3D-TAS combined with 3D-TVS in early diagnosis and classification of cesarean scar pregnancy after cesarean section
Objective To evaluate the application of three-dimensional transabdominal ultrasound(3D-TAS)combined with three-dimensional transvaginal ultrasound(3D-TVS)in the early diagnosis and classifi-cation of patients with cesarean scar pregnancy(CSP)after cesarean section.Methods A total of 135 suspec-ted CSP patients admitted to Luoyang First People's Hospital from March 2020 to March 2023 were examined by 3D-TAS and 3D-TVS.Taking postoperative pathology as the"gold standard",the early diagnosis and typ-ing value of 3D-TAS and 3D-TVS alone and combined examination in CSP patients were analyzed.Results A-mong 135 suspected CSP patients,100 cases(74.07%)were confirmed by postoperative pathology,and 35 ca-ses(25.93%)were non-CSP.The sensitivity and accuracy of 3D-TAS combined with 3D-TVS in diagnosing early CSP were significantly higher than those of 3D-TAS and 3D-TVS alone,while the missed diagnosis rate and negative predictive value were significantly lower than those of 3D-TAS and 3D-TVS alone,with statisti-cal significance(P<0.05).Postoperative pathology confirmed that among 100 CSP patients,25 cases were type Ⅰ,57 cases were type Ⅱ and 18 cases were type Ⅲ.The results of 3D-TAS and 3D-TVS combined exam-ination showed that there were 18 cases of type Ⅰ,45 cases of type Ⅱ and 17 cases of type Ⅲ,and the detec-tion rate of typing was 80.00%(80/100),which was in good agreement with CSP typing of pathological re-sults(Kappa value=0.769,95%CI:0.598-0.881,P<0.001).Conclusion The combined examination of 3D-TAS and 3D-TVS has high early diagnostic value for CSP patients,and can provide a reliable basis for CSP typing diagnosis,so it can be used as the first choice for screening CSP for pregnant women after cesarean sec-tion.