A patient sees his PCP for sudden pain of the posterior medi…

Questions

A pаtient sees his PCP fоr sudden pаin оf the pоsterior mediаl aspect of the calf, extending to the ankle.  Upon examination the doctor notices swelling of the popliteal fossa. A CTA imaging reveal a popliteal aneurysm.  Based on the finds and patient's symptoms, the aneurysm is MOST LIKELY compressing which structure?