Popliteal artery occlusion has many etiologies. Which of the following is one of them?

Popliteal artery occlusion can arise from a variety of causes, which include atherosclerosis, embolism, and thrombosis associated with degenerative aneurysms. Atherosclerosis is a common condition that leads to the buildup of plaque in the arterial walls, narrowing the artery and impeding blood flow. This can significantly impact the popliteal artery and lead to occlusion.

An embolus, which is a clot or material that travels through the bloodstream and lodges in a vessel, can also cause acute occlusion of the popliteal artery. This can happen in conditions where clots dislodge from the heart or other arteries, traveling downstream until they reach vessels narrower than the clot itself.

Lastly, thrombosis related to a degenerative aneurysm occurs when an aneurysm (an abnormal dilation of a blood vessel) develops in the popliteal artery. This can lead to blood clots forming and subsequently obstructing the arterial flow. Since all these conditions can independently cause popliteal artery occlusion, the correct answer encompasses all these potential etiologies.