Differential Diagnostic Value of Transvaginal Two-dimensional and Three-dimensional Ultrasound for Ectopic Pregnancy in the Interstitial and Cornual Regions of the Uterus
Objective:To observe the differential diagnostic value of transvaginal two-dimensional and three-dimensional ultrasound in ectopic pregnancy in the interstitial and cornual regions of the uterus.Methods:A total of 47 patients with highly suspected ectopic pregnancy in the interstitial and horn of the uterus admitted to Dongguan Eighth People's Hospital from January 2022 to December 2023 were selected.All patients underwent two-dimensional and three-dimensional ultrasound examinations,and the diagnostic"gold standard"was based on the surgical and pathological results of the patients.The differential diagnostic value of two-dimensional and three-dimensional ultrasound examinations for ecto-pic pregnancy in the interstitial and horn of the uterus was evaluated.Results:Out of 47 patients included in this study,22 patients showed cornual pregnancy on ultrasound,which was confirmed as cornual preg-nancy after surgery;14 cases of ultrasound showed interstitial pregnancy in the fallopian tubes,which was confirmed as interstitial pregnancy after surgery;four cases of ultrasound showed differentiation between corpus luteum rupture and ectopic pregnancy rupture,and postoperative confirmation of tubal interstitial pregnancy rupture;two cases of ultrasound showed tubal pregnancy and postoperative cornual pregnancy;two cases of uterine horn pregnancy were detected by ultrasound,and subsequent examination revealed termination of pregnancy due to intrauterine pregnancy.Among them,3 cases did not have a final"gold standard"diagnosis:2 cases showed cornual pregnancy on ultrasound,resulting in spontaneous abortion;1 case had no final follow-up results.There was no statistically significant difference(P>0.05)in the de-tection rate of ectopic pregnancy in the cornual and interstitial regions between three-dimensional ultra-sound and pathological results.There was no statistically significant difference(P>0.05)in the detection rate of ectopic pregnancy in the cornual and interstitial regions between two-dimensional ultrasound and pathological results.The diagnostic accuracy rate of three-dimensional ultrasound was 81.81%,while that of two-dimensional ultrasound was 47.73%(P<0.05).Conclusion:Three dimensional and two-dimensional ultrasound can be used for differential diagnosis of ectopic pregnancy in the interstitial and uterine horn regions,with a higher detection rate using three-dimensional ultrasound.
TransvaginalTwo dimensional ultrasoundThree dimensional ultrasoundInterstitial ectopic pregnancyEctopic pregnancy in the uterine hornDifferential diagnosis