Comparison of the diagnostic value between transabdominal ultrasonography and transvaginal ultrasonography in scar pregnancy after cesarean

Objective: To compare the application value between transabdominal ultrasonography and transvaginal ultrasonography in the diagnosis of scar pregnancy(CSP) after cesarean.Methods: Seventy patients suspected with CSP were detected using transabdominal and transvaginal ultrasound before operation,and diagonised with pathology after operation.The diagnostic accuracy between two groups was compared.Results: Among 70 patients,the CSP in 58 cases(82.86%) were diagnosed by pathological examination,which included 36 cases of gestational sac type(62.07%),18 cases of heterogeneous masses(31.03%) and 4 cases of mixed type(6.90%).The diagnostic rate of CSP in transabdominal combined with transvaginal ultrasonography and transvaginal ultrasonography was significantly higher than that in transabdominal ultrasonography(P<0.05),The difference of the diagnostic rate of CSP between transabdominal combined with transvaginal ultrasonography and transvaginal ultrasonography was not statistically significant(P>0.05).The sensitivity and specificity of the transabdominal combined with transvaginal ultrasonography in the diagnosis of CSP in were significantly higher than those in transabdominal ultrasonography(P<0.01),but there was no statistical significance between transvaginal ultrasonography and transabdominal combined with transvaginal ultrasonography(P>0.05).The sensitivity and specificity of transvaginal ultrasonography in the diagnosis of CSP were higher than those in transabdominal ultrasonography(P<0.01 and P<0.05).Conclusions: In the clinical diagnosis of scar pregnancy after cesarean section,the transvaginal ultrasonography can effectively compensate the lack of transabdominal ultrasonography,which can clearly show the range,location,blood supply and myometrial thickness of scar pregnancy,and improve the diagnostic accuracy of scar pregnancy.