case_images: PMC6886349_01
case_images: Left subclavian vein guidewire (black arrows) seen on fluoroscopy does not follow the typical anatomical course (traversing across midline) and travels caudal along the left side.
case_images: CRIS2019-6401236.001.jpg
case_images: PMC6886349_01_CRIS2019-6401236.001.jpg
case_images: fig1
case_images: Intraoperatively, the left subclavian vein was accessed, the wire was placed, and fluoroscopy showed the wire to be abnormally travelling caudal on the left side without crossing midline (Figure 1).
case_images: CT angiogram chest that demonstrates duplication of the superior vena cava (red arrows) with a persistent left superior vena cava, which drains into the coronary sinus (red outline arrows) and then the right atrium.
case_images: CRIS2019-6401236.002.jpg
case_images: PMC6886349_01_CRIS2019-6401236.002.jpg
case_images: fig2
case_images: The procedure was aborted, and a CT angiogram of the chest was obtained (Figure 2), revealing that the patient had a duplicate superior vena cava draining into the coronary sinus.