The risks associated with angioplasty for CCSVI treatment are minimal. So far out of roughly 3,000 patients worldwide there have been two deaths. One was from a stent that was placed in the jugular vein of a patient and that stent traveled to the heart (stents are not approved for placement in veins anymore). The other patient did not die from the angioplasty itself but rather from a reaction to the blood thinner that was given to the patient after the procedure- therefore it was a drug reaction, not the fault of the actual procedure.
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