Diagnostic Tests and Surgical Procedures

Percutaneous Transhepatic Cholangiography (PTCA)

What is the test? Percutaneous transhepatic cholangiography is an x-ray test that can help show whether there is a blockage in the liver or the bile ducts that drain it. Since the liver and its drainage system do not normally show up on x-rays, the doctor doing the x-ray needs to inject a special dye directly into the drainage system of the liver. This dye, which is visible on x-rays, should then spread out to…

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