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.
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Table 1.
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 |
Table 2.
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 |
Table 3.
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 |