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Figure 4: Retrograde angiogram in the MBTS demonstrates multiple filling defects with near occlusion of the MBTS (white arrows). Black arrows represent areas of RPA occlusion MBTS: Modified Blalock-Taussig shunt

Figure 4: Retrograde angiogram in the MBTS demonstrates multiple filling defects with near occlusion of the MBTS (white arrows). Black arrows represent areas of RPA occlusion 
MBTS: Modified Blalock-Taussig shunt