PMC4251112_01
Magnetic resonance cholangiopancreaticography showing obstructive biliary processes associated with stent dysfunction of the extrahepatic and common bile duct. Intraluminal irregular images (yellow arrow) of low signal intensity on T2-weighted sequences consistent with bile stones are observed; these lead to moderate dilation of the intrahepatic bile duct.
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fig1
To evaluate a probable biliary obstructive syndrome, an abdominal ultrasound and a magnetic resonance cholangiopancreatography were performed (Figure 1), which showed obstruction of the bile duct, secondary expansion, and presence of multiple gallstones.
Contrast enhanced coronal and axial chest CT. Subsegmental artery air embolism in apical segment of right lower lobe surrounded by contrast media is observed (yellow arrows).
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fig2
A CT angiography was done to rule out massive thromboembolism, which evidenced air embolus in the subsegmental arteries of the apical segment of the right lower lobe (Figures 2 and 3) and gas within the IVC in its hepatic portion (Figure 4).
Contrast enhanced sagittal chest CT. Intravascular filling defect with air density bubble in subsegmental artery (yellow arrow) of apical segment of right lower lobe, bronchus is underneath.
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fig3
A CT angiography was done to rule out massive thromboembolism, which evidenced air embolus in the subsegmental arteries of the apical segment of the right lower lobe (Figures 2 and 3) and gas within the IVC in its hepatic portion (Figure 4).
Contrast enhanced axial CT view showing air embolism (black arrow) inside intrahepatic portion of vena cava.
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fig4
A CT angiography was done to rule out massive thromboembolism, which evidenced air embolus in the subsegmental arteries of the apical segment of the right lower lobe (Figures 2 and 3) and gas within the IVC in its hepatic portion (Figure 4).