A case of intrahepatic cholesterol stone in the left lateral posterior branch treated with percutaneous transhepatic cholangioscopy (PTCS)

Abstract

The patient was a 48-year-old man with complaints of abdominal pain and fever. Percutaneous transhepatic cholangioscopy (PTCS) was performed. Stones were found in the left lateral posterior branch (B2) and removed by PTCS. The analysis of stone composition revealed that 90% of the stone was cholesterol. In this case, unusual severe stenosis was found on the root of cylindrically dilated B2. Cholangioscopic dilatation of stenosis was successfully performed. No recurrence of stones nor biliary stenosis has been found during the follow-up period of 1 year and 2 months. We believe that PTCS is useful for diagnosis and treatment of intrahepatic cholesterol stone.