case_images: PMC9517373_01
case_images: Postcontrast computed tomographic of mid abdomen in transverse (A), sagittal (B), volume rendering image in a right-dorsal view (C), and schematic representation of the malformation (C) showing the CVC venous ring (yellow arrow) described as double barrel-gun sign with the right ureter (red arrow) passing through it. The venous malformation is normally located right-ventral to the aorta (green arrow). Soft tissue reconstruction (window level: 40 HU, window width 400 HU) and a slice thickness of 1.25 mm were used. In (D), the aorta is blue, the CVC is red, and the ureter is yellow. R, right.
case_images: fvets-09-965185-g0001.jpg
case_images: PMC9517373_04_fvets-09-965185-g0001.jpg
case_images: F1
case_images: The two branches of the CVC were symmetrical in diameter with a double-barrel gun appearance and were located lateral to the aorta (Figure 1).
case_images: PMC9517373_02
case_images: Postcontrast computed tomographic images of mid abdomen in transverse views at the level of the right kidney (A) and just proximally to the venous ring (B) in a dog showing dilation of the renal pelvis (orange arrow) and dilation of the right ureter proximally to the venous ring malformation (red arrow). Soft tissue reconstruction (window level: 40 HU, window width 400 HU) and a slice thickness of 1.25 mm were used. R, right.
case_images: fvets-09-965185-g0002.jpg
case_images: PMC9517373_02_fvets-09-965185-g0002.jpg
case_images: F2
case_images: The ureter proximal to the venous ring was homogeneously distended (diameter of 9.6 mm) with associated mild pyelectasis (3.4 mm) (Figure 2).
case_images: PMC9517373_03
case_images: PMC9517373_04
case_images: Postcontrast computed tomographic of mid abdomen in transverse (A), sagittal (B), volume rendering image in a right-dorsal view (C), and schematic representation of the malformation (C) showing the CVC venous ring (yellow arrow) described as double barrel-gun sign with the right ureter (red arrow) passing through it. The venous malformation is normally located right-ventral to the aorta (green arrow). Soft tissue reconstruction (window level: 40 HU, window width 400 HU) and a slice thickness of 1.25 mm were used. In (D), the aorta is blue, the CVC is red, and the ureter is yellow. R, right.
case_images: fvets-09-965185-g0001.jpg
case_images: PMC9517373_04_fvets-09-965185-g0001.jpg
case_images: F1
case_images: The two branches of the CVC were symmetrical in diameter with a double-barrel gun appearance and were located lateral to the aorta (Figure 1).
case_images: PMC9517373_05
case_images: Postcontrast computed tomographic of mid abdomen in transverse (A), sagittal (B), volume rendering image in a right-dorsal view, (C) and schematic representation of the malformation (C) showing the CVC venous ring (yellow arrow) described as double barrel-gun sign with the right ureter (red arrow) passing through it. The two branches of the venous ring appear asymmetric with the dorsal branch located dorsally to the aorta (green arrow). Soft tissue reconstruction (window level: 50 HU, window width 350 HU) and a slice thickness of 2.5 mm were used. In (D), the aorta is blue, the CVC is red, and the ureter is yellow. R, right.
case_images: fvets-09-965185-g0003.jpg
case_images: PMC9517373_05_fvets-09-965185-g0003.jpg
case_images: F3
case_images: The two branches of the duplicated CVC were asymmetrical with a double-barrel gun appearance, in which the dorsal branch had a smaller diameter, and it was positioned right dorsal to the aorta (Figure 3).