percutaneous transhepatic cholangiography

…In such cases, a direct contrast method is used, in which a contrast agent is directly injected into the bile duct and an image is taken. There are two methods: percutaneous transhepatic cholangiography (PTC), in which a thin needle is used to puncture the skin and liver from outside the body and inject contrast agent into the intrahepatic bile duct, and endoscopic retrograde cholangiopancreatography (ERCP), in which a duodenoscope is used to observe the bile duct duodenal opening (papilla of Vater) while inserting a thin tube into it and injecting contrast agent. Both are excellent methods that can clearly observe the bile duct by injecting sufficient contrast agent even when bile secretion is impaired due to liver dysfunction or bile duct circulation disorder, but they are technically difficult and sometimes dangerous, so hospitalization is required. …

*Some of the terminology that refers to "percutaneous transhepatic cholangiography" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…その際には，胆道内に直接造影剤を注入し，撮影する直接造影法が用いられる。これには，細い穿刺（せんし）針を用い，体外から，皮膚･肝臓を穿刺し，肝内胆管に造影剤を入れる経皮経肝胆道造影法percutaneous transhepatic cholangiography(PTC)と十二指腸内視鏡を用い，胆管十二指腸開口部(ファーター乳頭)を観察しながら，その中に細い管を挿入し，造影剤を注入する内視鏡的逆行性胆管膵管造影法endoscopic retrograde cholangiopancreatography(ERCP)の二つの方法がある。いずれも，肝機能障害や胆管流通障害による胆汁分泌の障害が生じているときでも，十分な造影剤を注入することにより明りょうな胆道像が観察できるすぐれた方法だが，技術的に難しいことと，ときに危険を伴うことがあるため，入院を必要とする。…

※「percutaneous transhepatic cholangiography」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報