PMC6597617_01
CT images at first admission.. a. CT shows a left persistent sciatic artery (PSA) aneurysm (arrow) and the left popliteal artery located more laterally than the normal pattern (arrow head).. b. Three-dimensional CT shows complete-type PSA, hypoplastic superficial femoral artery (7 mm), and occlusion in the three artery branches of the lower leg (circle).
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CT scan revealed a left PSA aneurysm (Fig. 1a), the left PA fed from the PSA and the hypoplastic superficial FA (Fig. 1b). The PA ran more laterally than the normal pattern (Fig. 1a) and the three artery branches of the lower leg were occluded (Fig. 1b).
Magnetic resonance angiography during the first hospitalization.. Magnetic resonance angiography shows the patency of the posterior-tibial artery (PTA) and peroneal artery (arrow) from the tibio-peroneal trunk (circle). The anterior-tibial artery was not detected.
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MRI examination during hospitalization showed the patency of the posterior-tibial artery (PTA) and peroneal artery (Fig. 2).
Enhanced CT images one year after the surgery.. The bypass graft is patient and the artery from sciatic to superficial femoral is occluded at the PSA aneurysm (circle). The dilatation of PSA aneurysm has not been observed, its size is 22 mm in maximum minor-axis diameter (arrow).
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One year after surgery, the recurrence of embolism and other complications have not occurred, furthermore the aneurysm is occluded by thrombus (Fig. 3).