case_images: PMC4980848_01
case_images: Reconstruction of the anatomical variant of azygos vein system identified in this patient: the hemiazygos and accessory hemiazygos veins form common channels which drain into the brachiocephalic vein
case_images: 40064_2016_2956_Fig1_HTML.jpg
case_images: PMC4980848_01_40064_2016_2956_Fig1_HTML.jpg
case_images: Fig1
case_images: We have assumed it was a rare variant of the azygos vein system: the hemiazygos and accessory hemiazygos veins form common channels which drain into the brachiocephalic vein (Fig. 1) (Blackmon and Franco).
case_images: The prenatal ultrasound shows a vessel with parallel course on the left and posteriorly to the thoracic aorta
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case_images: PMC4980848_01_40064_2016_2956_Fig2_HTML.jpg
case_images: Fig2
case_images: During the investigation it has been identified the presence of a vessel with parallel course, rear and left to thoracic aorta (Fig. 2).
case_images: The prenatal ultrasound shows the accessory hemiazygos that drain into the left venous trunk brachial-cephalic
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case_images: PMC4980848_01_40064_2016_2956_Fig3_HTML.jpg
case_images: Fig3
case_images: The prenatal ultrasonography with color Doppler has showed a hemiazygos accessory vein that, from the diaphragmatic dome, joining with the superior intercostal vein, seemed to drain into the venous trunk brachial-cephalic left (Fig. 3).
case_images: The postnatal echocardiography, through color:Doppler, shows the anterograde flow of blood draining in the left brachiocephalic trunk, as reconstructed in anatomical model in Fig. 1
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case_images: PMC4980848_01_40064_2016_2956_Fig4_HTML.jpg
case_images: Fig4
case_images: Postnatal echocardiography has confirmed the presence of a hemiazygos accessory vein that drains into the left brachial-cephalic trunk (Fig. 4).