Intrahepatic stones: the Taiwan experience

Area of Science:

• Hepatology
• Gastroenterology
• Surgical Gastroenterology

Background:

• Intrahepatic stones present a significant clinical challenge, particularly in Southeast Asian populations.
• The disease predominantly affects young individuals, with a notable proportion experiencing symptom onset before the age of 20.

Purpose of the Study:

• To analyze the characteristics, diagnosis, and management outcomes of intrahepatic stones.
• To evaluate the efficacy and recurrence rates of different surgical and medical interventions.

Main Methods:

• Retrospective analysis of 95 patients with intrahepatic stones diagnosed between 1970 and 1979.
• Diagnostic evaluation primarily utilized transhepatic cholangiography.
• Treatment strategies included cholecystectomy, common bile duct exploration, and medical management for recurrent cases.

Main Results:

• A decline in the annual incidence of intrahepatic stones was observed since 1974.
• The average diagnostic delay was 8.3 years, highlighting challenges in early detection.
• Southeast Asian stones are characterized as multiple, soft, pigmented, and located within the biliary radicles.
• Recurrence rates varied, with reoperation needed after 2.5 years post-exploration and 5.7 years post-cholecystectomy; 11 of 18 recurrent cases were managed medically.
• The study reported a surprisingly low mortality rate.

Conclusions:

• Intrahepatic stones require a comprehensive diagnostic and management approach due to their complex nature and tendency for recurrence.
• Transhepatic cholangiography is a key diagnostic tool, though no single treatment procedure is universally satisfactory.
• The findings suggest a need for improved diagnostic timelines and tailored management strategies, including medical options for recurrent disease.