Phlebography (also called venography) is an x-ray test to evaluate
the veins in the legs and the feet. It is used to diagnose deep
venous thrombosis (DVT), to distinguish between blood clots and
other obstructions (such as tumors), to evaluate congenital
abnormalities in the veins, and to locate a suitable vein for a
heart bypass graft.
• A local anesthetic (a numbing medication) is given and x-ray dye
(contrast medium) is injected into a large vein in the leg or foot.
• The contrast dye may cause a burning sensation in the leg and a
general flushing sensation or a feeling of nausea.
• There is a small risk of allergy or intolerance to the contrast
• There is also a very small risk of the dye causing inflammation or
clotting in the vein (phlebitis or deep venous thrombosis)
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