Journal List > Korean J Gastroenterol > v.58(4) > 1006863

Lee, Kim, Kim, Choi, Kim, Jeong, Ha, Ku, Kim, and Kim: The Effect of Periampullary Diverticulum on the Outcome of Bile Duct Stone Treatment with Endoscopic Papillary Large Balloon Dilation

Abstract

Background/Aims

Periampullary diverticulum (PAD) causes difficulty in the extraction of common bile duct (CBD) stones with conventional endoscopic therapy. Our study was designed to evaluate the effect of PAD on endoscopic large balloon dilation (EPLBD) with/without limited endoscopic sphincterotomy (EST) for CBD stone treatment.

Methods

We retrospectively reviewed cases of 141 patients treated CBD stones by EPLBD with/without limited EST at Gachon Gil Medical Center from September 2008 to February 2010. PAD were classified into three groups according to the location of the papilla and diverticulum. Clinical parameters, endoscopic parameters, and procedure outcomes were analyzed.

Results

PAD were identified in 46.1% (65/141), with 23 male (35.4%) and 42 female (64.6%) and a mean age of 72.9±11.1 years. Mean diameter of the stones was 14.8±6.0 mm and mean diameter of CBD was 21.6±7.7 mm. PAD group was significantly older than control group (72.9 vs. 68.6, p=0.043) and the incidence of large stone (≥15 mm) was higher in PAD group (60.0% vs. 42.1%, p=0.034). Success rate of complete removal of stones in the first session was 32/65 patients (49.2%) and overall successful complete stone removal rates was 63/65 (96.9%). There was no significant difference between the PAD and control groups in success rate. Major complications were similar between two groups.

Conclusions

PAD is associated with an increased incidence of large bile duct stones and older age. PAD seems to not increase technical failure rate or complication risk on EPLBD with/without limited EST.

References

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Table 1.
Results of Endoscopic Stone Removal Using EPLBD
  Total (n=141) PAD (+) group (n=65) PAD (−) group (n=76) p-valuea
Age (yr) 70.6±12.7 72.9±11.1 68.6±13.7 0.043
Male 54 (38.3) 23 (35.4) 31 (40.8) 0.51
Billoth II operation 7 (5.0) 4 (6.2) 3 (3.9) 0.703
Previous EST 31 (22.0) 10 (15.4) 21 (27.6) 0.08
CBD stone        
   Size of the largest stone (mm) ≥15 71 (50.4) 39 (60) 32 (42.1) 0.034
   Multiple stones ≥ 88 (62.4) 42 (64.6) 46 (60.5) 0.617
Precut before balloon dilation 7 (5.0) 2 (3.1) 5 (6.6) 0.452
Enodoscopic papillary balloon        
   Balloon diameter (mm) 16.5±2.6 16.4±2.5 16.6±2.7 0.753
   Ballon diameter (mm) ≥18 78 (55.3) 36 (55.4) 42 (55.3) 0.988
Characteristics of CBD        
   Bile duct diameter (mm) ≥15 115 (81.6) 56 (86.2) 59 (77.6) 0.193
   CBD arm (mm) ≤36 41.7±13.3 20 (30.8) 34 (44.7) 0.089
   CBD angle (degree) ≤135 146.0±16.9 17 (26.2) 19 (25.0) 0.876
Mechanical lithotripsy performed 5 (3.5) 3 (4.6) 2 (2.6) 0.426
Sussess of stone remove in the 1st session 73 (51.8) 32 (49.2) 41 (53.9) 0.576
Overall complete stone removal 132 (93.6) 63 (96.9) 69 (90.8) 0.137

Values are presented as mean±SD or n (%).

EPLBD, endoscopic large balloon dilation; PAD, periampullary diverticulum; EST, endoscopic sphincterotomy; CBD, common bile duct.

a Comparison of PAD (+) group and PAD (−) group.

Table 2.
Outcome according to Type of Periampullary Diverticulum
Characteristics Type 1a Type 2b Type 3c p-valued
Number of patients 8 (12.3) 37 (56.9) 20 (30.8)  
Age (yr) 76.0±9.7 73.4±11.0 70.9±11.9 0.511
Male 2 (25.0) 15 (40.5) 6 (30.0) 0.588
Billoth II operation 0 (0) 1 (2.7) 3 (15.0) 0.135
Previous EST 2 (25.0) 5 (13.5) 3 (15.0) 0.715
CBD stone        
   Size of largest stone (mm) ≥15 4 (50.0) 24 (64.9) 11 (55.0) 0.636
   Multiple stones ≥2 5 (62.5) 23 (62.2) 14 (70.0) 0.832
Precut before balloon dilation 0 (0) 0 (0) 2 (10.0) 0.098
Enodoscopic papillary balloon        
   Balloon diameter (mm) 15.8±2.7 16.6±2.4 16.4±2.7 0.707
   Ballon diameter (mm) ≥18 4 (50.0) 20 (54.1) 12 (60.0) 0.864
Characteristics of CBD        
   Largest bile duct diameter (mm) ≥15 7 (87.5) 33 (89.2) 16 (80.0) 0.627
   CBD arm (mm) ≤36 5 (62.5) 25 (67.6) 15 (75.0) 0.767
   CBD angle (degree) ≤135 7 (87.5) 30 (81.1) 11 (55.0) 0.065
Mechanical lithotripsy 0 (0) 1 (2.7) 2 (10) 0.366
Sussess of stone remove in 1st session 6 (75.0) 18 (48.6) 8 (40.0) 0.245
Overall stone removal 8 (100) 35 (94.6) 20 (100) 0.458

Values are presented as mean±SD or n (%).

EST, endoscopic sphincterotomy; CBD, common bile duct; NA, not available.

a Papilla was located to inside of diverticulum.

b Papilla was located to lower rim of diverticulum.

c Papilla was located outside of diverticulum (<2 cm).

d Comparison of subgroups of periampullary diverticula.

Table 3.
Complication Incidences after EPLBD
Characteristics PAD (+) group PAD subtypes PAD (−) group p-valuee
Type 1a Type 2b Type 3c p-valued
Number of patients 65 (46.1) 8 (12.3) 37 (56.9) 20 (30.8)   76 (53.9)  
Hemorrahge 1 (1.5) 0 (0) 1 (2.7) 0 (0) NA 1 (1.3) 0.902
Pancreatitis 13 (20.0) 0 (0) 7 (18.9) 6 (30.0) 0.194 15 (19.7) 0.969
Perforation 0 (0) 0 (0) 0 (0) 0 (0) NA 3 (3.9) NA
Other complicationsf 2 (3.1) 0 (0) 2 (5.4) 0 (0) NA 0 (0) 0.211
All complications 14 (21.5) 0 (0) 8 (21.6) 6 (30) 0.218 19 (25.0) 0.692

Values are presented as n (%).

EPLBD, endoscopic large balloon dilation; PAD, periampullary diverticulum; NA, not available.

a Papilla was located to inside of diverticulum.

b Papilla was located to lower rim of diverticulum.

c Papilla was located outside of diverticulum (<2 cm).

d Comparison of subgroups of periampullary diverticula.

e Comparison of PAD (+) group and PAD (−) group.

f One case was biliary sepsis with pancreatitis, the other case was pneumonia with pancreatitis.

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