Table 2 Characteristics of patients with stone in remnant intrapancreatic common bile duct/common channel duct (RIPD/CCD) (n = 18).

Male:female

4: 14

Clinical presentation at diagnosis of RIPD/CCD stones

 Pancreatitis

13 (72.2%)

 Asymptomatic

5 (27.8%)

Age at choledochal cyst excision (months)

 Neonate (age ≤ 30 days)

0

 Infants (age ≤ 1 year)

0

 Children (age ≥ 1 year)

18 (100.0%)

Symptoms at the time of choledochal cyst diagnosis

 Biliary obstruction

4 (22.2%)

 Pancreatitis

5 (27.8%)

 Both

9 (50.5%)

Preoperative intervention

11 (61.1%)

Age at choledocholithiasis diagnosis (years)

10.5 ± 5.4 (3.4–18.8)

Time from operation to stone occurrence (months)

65.6 ± 72.3 (0.4–210.3)

 Follow-up duration (months)

72.7 ± 56.3 (4.4–212.9)

Outcome

 Symptoms: Persisting/no symptom

0/18 (0%/100.0%)

 Residual stone: Residual stone/no residual stone/

4/14 (22.2%/77.8%)

 Follow-up loss

1 (5.6%)

 Plan

  Regular follow-up

16 (88.9%)

  Further ERCP

2 (11.1%, ERPD insertion in 1 patient)