Over time, what may have started out as an “itsy bitsy” spider vein can become a real concern. We call them “spider veins” because of their web-like appearance, but really they’re broken blood vessels ...

Swollen veins can signal various underlying health conditions ranging from minor circulatory issues to serious medical concerns. Recognizing the primary causes helps determine when to seek ...

In the condition known as cavernoma, lesions arise in a cluster of blood vessels in the brain, spinal cord or retina. Researchers from Uppsala University can now show, at molecular level, that these ...

In a first-of-its-kind operation in the United States, a team of doctors created a bioengineered blood vessel and implanted it into the arm of a patient with end-stage kidney disease. The procedure, ...

Whenever you see blood outside your body, it looks red. Why? Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that’s crucial for carrying oxygen ...

Microrobots may become an effective tool in breaking down the dangerous blood vessel blockages that cause strokes. But these ...

Surgeons in the United States perform nearly 600,000 coronary artery stent procedures and bypass surgeries every year.

Certain blood vessels in the brainstem constrict when blood vessels elsewhere in the body would dilate. And that contrary behavior is what keeps us breathing, according to a new article. Certain blood ...

Scientists built a vein made entirely of human tissue for a 10-year-old girl. June 13, 2012 — -- Scientists in Sweden are reporting a medical first: a vein grown in a lab for a 10-year-old girl ...