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All right. For our last companion case of a popliteal artery entrapment,

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the cause for it is probably an anomalous or an

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accessory muscle tendon, is what we're going to see next.

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So we're going to do a focused look at the popliteal arteries on both sides

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and compare both the sides. So as we're scrolling down and we're looking

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at the popliteal artery over here, we can see that there are

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some more density in this popliteal fossa here.

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And this is a slip

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of the gastrocnemius muscle here with

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an accessory slip. And

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that's causing deviation of the popliteal artery right here,

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and there's thrombosis of the popliteal artery with lots of collaterals

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at the back of the popliteal artery, along with

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aneurysmal formation, all of which are known complications.

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There's a lot more collaterals here, you can see, compared to the opposite

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side as well. A lot more squiggly collaterals in that left lower

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extremity.

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You can take a look at it on a sagittal view as well.

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So when I make a MIP view, here we can see that there's

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deviation of that popliteal artery.

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That popliteal artery, which the expected position is over

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here, is thrombosed, and then it's just later reconstituted by

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these collateral vessels with aneurysmal formation at its point

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of reconstitution, and then distal reconstituted

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flow and patent runoff to the three calf artery

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branches. Now, this, in the setting of the anomalous and

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accessory

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slip of muscle, as well as young patient, as well as lack of

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atherosclerosis, again, raise suspicion for popliteal artery

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entrapment being the cause.