PMC6350421_01
Collateral pathways
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F1
In addition, the following collateral pathways were demonstrated: From right subclavian and internal thoracic arteries to right external iliac artery through epigastric arteries and also a greater one at the left side between left internal thoracic artery, which was exceptionally large vessel to left external iliac artery through epigastric arteries, providing total perfusion of the left lower extremity [Figure 1].
Left iliac artery-femoral axis patency
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F2
A month later, a repeated CTA evaluation revealed left iliac artery-femoral axis patency and decreased appearance of left-sided anterior collateral pathway [Figure 2].