Table 1 Characteristics of patients with intrahepatic bile duct (IHD) stones (n = 21).

Male:female

5:16

Clinical presentation at diagnosis of IHD stones

 Cholangitis (abdominal pain and fever)

9 (43.0%)

 Asymptomatic

8 (38.1%)

 Abdominal pain

3 (14.3%)

 Liver abscess

1 (4.8%)

Age at choledochal cyst excision (months)

 Neonate (age ≤ 30 days)

2 (9.5%)

 Infants (age ≤ 1 year)

0

 Children (age ≥ 1 year)

19 (90.5%)

Preoperative intervention

8 (38.1%, ERCP (n = 7), PTBD (n = 1))

Age at choledocholithiasis diagnosis (years, range)

17.4 ± 6.2 (4.5–33.6)

Time from operation to stone occurrence (months, range)

122.2 ± 70.6(18.6–277.1)

Follow-up duration (months, range)

41.8 ± 47.9 (2.2–155.9)

Outcome

 Symptoms: Persisting/resolved/no symptom

5 (one with mild symptoms)/15/1

(23.8%/71.4%/4.8%)

 Residual stone: large stones/small stones/no residual stone

3/9/7

 Follow-up loss

1 (4.8%)

Plan

  Observation (small stones > clear)

4 (19.0%)

  Regular follow-up (clear > small stones)

8 (38.1%)

  Medical treatment

1 (4.8%)

  Planning PTCS

4 (19.0%)

  Planning endoscopic HJ

2 (9.5%)