There may be only a couple of dozen cases of arterial tortuosity syndrome in the literature, but Johns Hopkins geneticist Hal Dietz is well acquainted with the unusual and life-threatening symptoms that characterize it.

Vascular surgeon Thomas Reifsnyder has made it something of a personal mission to not merely treat but actually save the limbs of people with diabetes or other conditions that cause circulation problems in the legs and feet.

In people 70 and older with atrial fibrillation, the risk of stroke is far higher than the risks associated with long-term anticoagulation therapy.

David Yuh, director of cardiac surgical research, is teaming up with engineers to develop a better way to plan reconstructive heart surgery.

A detailed study of lung-transplant outcomes has exploded several myths, including the notion that double-lung transplants are too risky in people over 60.