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Vena cava inferior interruption, persistent right umbilical vein

Frantisek Grochal, MD

Article Published: Nov 2, 2011

Femicare, s.r.o., Center of prenatal ultrasonographic diagnostics, Martin, Slovak republic. UVN SNP Ruzomberok, Gynecological and obstetrical department. Catholic University in Ruzomberok, Faculty of Health Care, Ruzomberok, Slovak Republic.

Case report

Following images show a case of interrupted inferior vena cava inferior with continuation of the venous flow via azygos vein and persistent right umbilical vein diagnosed at 30 weeks of an uneventful pregnancy. The baby was born in term and is doing well.

Images 1-3, video 1: The images and video show sagittal scans of the fetal thorax and abdomen at the level of the right atrium of the heart. Only remnant of the interrupted vena cava with inflow of the hepatic veins can be seen.

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Images 4-5: The images show longitudinal scans of the aorta-azygos relationship with markedly dilated azygos vein due to vena cava inferior interruption.

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Images 6-8: The images show transverse scans of the fetal abdomen (Image 6) and thorax (Image 7, 8) with markedly dilated azygos vein posterior to the aorta due to the vena cava inferior interruption.

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Images 9-11, video 2: The images and video show transverse scans of the fetal abdomen with persistent right umbilical vein.

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