Two-step approach: Stone extraction after covered stent placement in Mirizzi syndrome: Early experience from a retrospective study

Table 1 Patient characteristics

Items	Value
Patients
Female	14
Male	9
Age (year)	69.0 (24.0, 82.0)
Maximum stone diameter (mm)	11.0 (7.0, 16.0)
Downstream bile duct diameter (mm)	6.0 (3.0, 9.0)
Stone number
≥ 3	7
< 3	16
Csendes type
I and II	5
III and IV	18
Previous ERCP	5

Data were presented as median (range) for continuous variables. ERCP: Endoscopic retrograde cholangiopancreatography.

Table 2 Treatment outcomes and complication rates

Items	Value
Covered stent time (minute)	9.0 (6.0, 17.0)
Difficult cannulation	2 (8.7)
Covered stent success	23 (100.0)
Covered stent dwell time (day)	63 (52, 86)
Stone extraction time (minute)	21.5 (7.0, 57.0)
Use of a basket for extraction	16 (69.6)
Use of a balloon for extraction	21 (91.3)
Stone extraction success	19 (82.6)
Residual stone	4 (17.4)
Following electrohydraulic lithotripsy	4 (17.4)
Following LC	17 (73.9)
Adverse event
Bleeding	0 (0)
Perforation	0 (0)
Pancreatitis	3 (13.0)
Cholangitis	0 (0)
Cholecystitis	5 (21.8)

Data were presented as n (%) for categorical variables and as median (range) for continuous variables. LC: Laparoscopic cholecystectomy.