BSIP VEM / SCIENCE PHOTO LIBRARY BSIP VEM / SCIENCE PHOTO LIBRARY
Thrombosis. Coloured X-ray angiogram showing thrombosis in the abdominal aorta. The abdominal aorta is the large orange blood vessel at the top. At the top left and top right are the two kidneys (green). Behind the aorta is the spinal column (yellow). The aorta appears to stop abruptly half way down, where the blood is then diverted into smaller arteries. This is caused by an abnormal clot, or thrombus, which is blocking the vessel just below the point where it seems to stop. A thin trickle of blood has passed the thrombus, and the part of the aorta just above it has swollen. Thrombosis occurs in diseased blood vessels and can often lead to serious disability or death.
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