Surgeons have used a new technique to save the life of a toddler who was born with an extremely rare birth defect in what is ...

Conor O’Rourke, who is now three, was part of a rare subgroup of patients which made his condition essentially untreatable.

Vein of galen malformation (VOGM) is a rare condition which occurs in pregnancy, affecting about one in a million children.

She explained that there are larger veins, called deep veins, which return the bulk of blood to the heart, and there are superficial veins, which are just under the skin surface.

Deep vein thrombosis is most commonly associated with clotting in the legs, which can occur after hours of sitting in one position, such as in a car or on long plane flights. Lying in bed for ...

A pulmonary embolism is usually caused by a blood clot in one of the body's deep veins. But it may be caused by other foreign substances. Learn more.