略語大辞典 [Med] 19 PTC percutaneous transhepatic cholangiography 経皮経肝胆道(管)造影(または撮影). percutaneous transhepatic cholangiography; an endoscopic technique for the diagnosis or exclusion of bile duct obstruction "from above"; another technique is ERCP(endoscopic retrograde cholangiopancreatography) which is "from below 丸善「略語大辞典」JLogosID : 11856805