Lemfadli Yassine, Jallouli Abderrahmane, Ait Errami Adil, Oubaha Sofia, Samlani Zouhour and KratiKhadija
External biliary drainage is a necessary procedure in some situations, particularly in tumour obstructions of the bile ducts. We report the case of a 51-year-old man with hyponatremia and functional renal failure after high- volume biliary excretion following external percutaneous transhepatic biliary drainage for an obstructive Klatskin tumor. Our case shows that internal drainage should be preferred to external drainage which is a source of hydro electrolyte and circulatory complications that can be life- threatening.