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EXCERPT:
Sen. Lindsey Graham, the prominent Republican from South Carolina who served in the Senate for more than two decades, died after suffering an aortic dissection, his office said Sunday.
Graham died unexpectedly Saturday night, his office announced, shortly after he had returned to Washington after a trip to Ukraine.
In a statement, his spokesperson said a preliminary report from the medical examiner for the District of Columbia found that the 71-year-old senator died of aortic dissection due to arteriosclerotic cardiovascular disease. With aortic dissection, a tear occurs in the wall of the aorta.
According to the Mayo Clinic, aortic dissection is not very common, and its symptoms may be mistakenly attributed to other health conditions. It usually affects men in their 60s and 70s. If the blood from the dissection travels outside the artery, the condition is often fatal.