A forty year old woman presents with a stroke, but doesn't have the traditional risk factors (smoking, hypertension, or hypercholesterolemia). Instead, she presents with a swollen tender right calf after an 18 hour plane ride. She is currently on oral contraceptives. When you look at her hands, you notice cyanosis and the following finding:
Challenge: What's the cause of the stroke? What's the status of her lungs? What's the physiology of her heart?
1. What is shown on the image?
This case idea contributed by Alex Penn.
Image is in the public domain.