6. The success of endoscopic cholangiography is related to the Tsunoda classification, the higher the Tsunoda classification III-IV the lower the possibility of completely extracting the intrahepatic calculi.
6. El éxito de la colangiografía endoscópica se relaciona con la clasificación de Tsunoda, a mayor Tsunoda III-IV menos posibilidad de extraer completamente los cálculos intrahepáticos.