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Harvard Medical School
This test is safe for most patients, but there are some serious complications that can occur. Bleeding can occur from the place where the needle went into the liver. When this occurs, the blood usually stays inside the sac that surrounds the liver and causes this lining to stretch to the point that you feel some pain for a few days. More serious bleeding is rare. If you are one of the patients who has more serious bleeding, there is a chance that you will need surgery to stop the bleeding. Other risks include injury to the lung, intestine, or gallbladder. These rarely occur.