The ballon dilation for mild ring-like hilar stricture of bile duct is valide but not for hilar tubular stricture of secondary sclerosing cholangitis.

• 气囊扩张虽对轻度环形狭窄有良效，但继发性硬化性胆管炎伴肝门管状狭窄气囊扩张疗效欠佳。