percutaneous transhepatic cholangiography

== English == === Etymology === From percutaneous +‎ transhepatic +‎ cholangiography === Noun === percutaneous transhepatic cholangiography (uncountable, abbreviation PTHC) (medicine) An invasive imaging procedure in which a needle is inserted through the skin and liver into a bile duct, contrast dye is injected, and X-ray images are taken to visualize the biliary tree and identify or treat bile duct obstruction.