Vascular

Question 1

Aneurysm ddx

Answer 1

• collagen disorder (Ehler-Danlos)
• polycystic kidney disease
• infective (mycotic favour branch points and are peripheral in COW)
• traumatic (pseudoaneurysm)
• segmental arterial mediolysis (middle age/elderly: mesenteric bleed, SMA branch string of pearls aneurysms)
• Fibromuscular dysplasia (upper ICA, young women)
• atherosclerotic

Question 2

Popliteal artery occlusion

Answer 2

• cystic adventitial disease
• entrapment syndrome
• aneurysm
• embolic disease
• atherosclerotic disease