Biliary complications including biliary strictures and bile leaks are the most common complications that occur after liver transplantation (LT). Endoscopic treatment with endoscopic retrograde cholangiography (ERC) is considered the first-line treatment, and percutaneous transhepatic cholangiography (PTC) can serve as an alternative or rescue therapy. However, nationwide clinical data on the frequency of ERC and PTC following LT have not yet been investigated.

中文翻译：

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肝移植后的内窥镜和经皮胆道干预：韩国的全国数据。

包括胆道狭窄和胆漏在内的胆道并发症是肝移植 (LT) 后最常见的并发症。内镜逆行胆管造影（ERC）的内镜治疗被认为是一线治疗，经皮经肝胆管造影（PTC）可作为替代或抢救治疗。然而，关于 LT 后 ERC 和 PTC 频率的全国性临床数据尚未调查。