Objective: The purpose of this article is to review the published literature and determine the rolethat3-dimensional Ultrasonography (3DUS) play in the diagnosis of LPSVC.
Methods:The volume data sets were acquired with transverse sweeps through the fetal chest. Volumes were stored in the ultrasound machine's hard drive and subsequently analyzed offline.Results: PLSVC was unequivocally diagnosed and the diagnosis confirmed by postnatal US.Conclusion: 3D ultrasonography especially power Doppler imaging made it possible to unequivocally confirm the diagnosis of the LPSVC and demonstrate LPSVC entering the dilated coronary sinus. The images obtained made it easy to explain this anomaly to the patient. This case of isolated LPSVC in a 30 -week fetus demonstrates the added value of 3D ultrasonography and especially 3D power colour in fetal echocardiography.
Case PresentationA 39-year-old woman, gravida 2 para 1, presented at 30 weeks' gestation for detailed targeted organ scanning with fetal echocardiography, after having received contradictory opinions concerning a suspected atrioventricular canal defect during previous ultrasound examinations. Karyotype, which had been tested because of advanced maternal age, was normal. Targeted organ scanning for exclusion of fetal anomalies was performed, including complete fetal echocardiography 2 and 3 D US and coulor Doppler and 3 D Power Doppler power imaging (Figures 1-3).In the present case, the initial diagnosis of LPSVC was made on observation of a dilated coronary sinus and an extraneous vessel identified to the left of the ductal arch in the three-vessels and trachea (3VT) view of the fetal heart ( Figures 1E ,F and 3D).We performed ultrasound examinations using a GE Voluson 730 pro. (Voluson 730, GE Healthcare, Milwaukee, WI, USA) using a 3-5-MHz mechanical volume transabdominal transducer). The volumes were stored and subsequently analyzed offline.Meticulous inspection of the fetal anatomy did not reveal any associated cardiac or extra cardiac anomalies and fetal growth was on the 50th centile. A male neonate was spontaneously delivered at38 weeks of gestation with a birth weight of 3150 g with Apgar scores of 8, 9 and 10 at 1,5 and 10 min, respectively. Postnatal adaptation was uneventful. Postnatal echocardiography confirmed the prenatal diagnosis.3D power Doppler imaging made it possible to unequivocally confirm the diagnosis of the LPSVC and demonstrate LPSVC entering the dilated coronary sinus (Figures 1 and 3). The images obtained made it easy to explain this anomaly to the patient. This case of isolated LPSVC in a 30-week fetus demonstrates the added value of power colour Doppler 3D in fetal echocardiography.It appears that 3Dpower Doppler imaging applications will make a significant contribution to our understanding of the developing fetal heart in both normal and anomalous cases, to interdisciplinary management team consultation, to parental counselling, and to professional training
CommentPersistent left superior vena cava is a rare but is the most...