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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Transhepatic Cholangiogram - Percutaneous Transhepatic Cholangiogram

Overview & Description
Preparation & Expectations
Results and Values
Attribution
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Results and Values

What do the test results mean?

A PTCA may reveal a blockage, known as a biliary obstruction, or other abnormality in the ducts. A blockage could be due to a gallstone, inflammation, or a tumor.