Three‐dimensional transvaginal sonography of interstitial pregnancy

Abstract

We describe the case of a 33-year-old pregnant woman, gravida 1 para 0, who was referred to us with a presumptive diagnosis of an interstitial pregnancy. The patient had had amenorrhea for 7 weeks and had previously undergone myomectomy. Two-dimensional sonographic examination revealed a gestational sac located outside the uterine cavity but could not define its exact anatomic position. Using transvaginal 3-dimensional sonography, we were able to correctly depict the sac, which was located where the fallopian tube crossed the uterine horn. We performed a cornual resection, during which the diagnosis of interstitial pregnancy was confirmed. The use of 3-dimensional sonography in this patient's case thus led to appropriate early treatment and avoidance of possible subsequent morbidity.

Misdiagnosed Uterine Rupture of an Advanced Cornual Pregnancy

“…It is anecdotally reported that 3D ultrasound and MRI can give more accurate information about the exact position of the gestational sac and thus help to differentiate between angular and interstitial pregnancies [21, 22]. …”

Ultrasound Evaluation of the First Trimester

“…When the diagnosis is in doubt, 3-dimensional sonography with multiplanar reconstruction can be helpful in some cases. 33 When the location of the pregnancy remains uncertain and the patient is hemodynamically stable, follow-up scanning may be necessary to establish the diagnosis.…”

Ektope Schwangerschaften mit untypischer Lokalisation und eine angulare Schwangerschaft: Bericht von acht Fällen

“…Th e fi nal diagnosis could be done during laparoscopy. Although three-dimensional ultrasound seems to provide a better tool for diagnosis of ectopic pregnancies [17], the limitations of ultrasound diagnosis must also be considered. Th ree-dimensional ultrasound, hysterosalpingography and magnetic resonance imaging can be useful in diagnosing uterine anomalies to distinguish cornual pregnancy.…”