DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Ulcerated varicose veins. Close-up of the leg of a 93-year-old female patient with varicose veins that have become ulcerated. Varicose veins are veins that become swollen, lengthened and coiled. They form due to defective valves in the superficial veins, commonly in the legs, and may require surgical removal.
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