1Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
2Department of Diagnostic Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
3Department of Radiological Advanced Medicine, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
Copyright © 2021 Korean Society of Gastrointestinal Endoscopy
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Conflicts of Interest: The authors have no potential conflicts of interest.
Funding
None.
Author Contributions
Conceptualization: Masafumi Watanabe, Kosuke Okuwaki
Data curation: MW, KO, Jun Woo, Mitsuhiro Kida, Hiroshi Imaizumi, Tomohisa Iwai
Formal analysis: MW, KO
Investigation: MW, KO
Methodology: MW, KO
Project administration: MW, KO
Resources: MW, KO
Software: MW, KO
Supervision: MW, KO
Validation: MW, KO
Visualization: MW, KO
Writing-original draft: MW, KO
Writing-review&editing: KO, JW, MK, HI, TI, Hiroshi Yamauchi, Toru Kaneko, Rikiya Hasegawa, Takahiro Kurosu, Naoki Minato, Hiroki Haradome, Wasaburo Koizumi
Univariate analysis |
Multivariate analysis |
|||
---|---|---|---|---|
Patients | p-value | OR (95% CI) | p-value | |
Sex | 0.594 | |||
Male | 12/72 | |||
Female | 6/46 | |||
Causative disease | n.c. | |||
Pancreatic and biliary cancer | 18/113 | |||
Others | 0/5 | |||
Previous biliary duct drainage using plastic stent | 0.553 | |||
Yes | 13/78 | |||
No | 5/40 | |||
Flow of contrast agent into gallbladder | 0.012 | 3.496 (1.184–10.322) | 0.023 | |
Yes | 10/35 | |||
No | 8/83 | |||
Median stent length | 0.287 | |||
>60 mm | 12/65 | |||
≤60 mm | 6/53 | |||
Location of SEMS placement | 0.255 | |||
Across the papilla | 15/107 | |||
Above the papilla | 3/11 | |||
Tumor involvement at the OCD | 0.003 | 4.702 (1.591–13.895) | 0.005 | |
Yes | 11/35 | |||
No | 7/83 | |||
Tumor invasion to cystic artery* | n.c. | |||
Yes | 0/3 | |||
No | 18/111 | |||
Tumor invasion to the origin of cystic artery** | 0.596 | |||
Yes | 1/10 | |||
No | 17/103 | |||
Gallbladder stones | 0.767 | |||
Yes | 3/17 | |||
No | 14/101 | |||
Structure of SEMS | 0.398 | |||
Braded | 17/115 | |||
Laser-cut | 1/3 |
n (%) | |
---|---|
Median age, yr [range] | 72 [22–92] |
Sex, male/female | 72 (61.0)/46 (39.0) |
Etiology of malignant biliary obstruction | |
Pancreatic cancer | 98 (83.1) |
Biliary tract cancer | 15 (12.7) |
Other malignancies | 5 (4.2) |
Previous biliary duct drainage using plastic stent | 78 (66.1) |
Papillary treatment | |
EST | 104 (88.1) |
EPBD | 2 (1.7) |
None | 12 (10.2) |
Flow of contrast agent into gallbladder | 35 (29.7) |
Median stent length | |
>60 mm/≤60 mm | 65 (55.1)/53 (44.9) |
Location of the SEMS placement | |
Across/above the papilla | 107 (90.7)/11 (9.3) |
Tumor involvement to OCD | 35 (29.7) |
Artery feeding the gallbladder | |
Cystic artery | 114 (96.6) |
Unidentifiable | 4 (3.4) |
Origin of the cystic artery | |
RHA | 95 (80.5) |
Replaced RHA | 10 (8.5) |
GDA | 4 (3.4) |
PHA | 2 (1.7) |
LHA | 1 (0.8) |
SMA | 1 (0.8) |
Unidentifiable | 5 (4.2) |
Tumor invasion to the cystic artery | 3 (2.5) |
Tumor invasion to the origin of the cystic artery | 10 (8.5) |
Gallbladder stones | 17 (14.4) |
n (%) | |
---|---|
Severity grading of cholecystitis after stent placement | |
Mild | 1 (5.6) |
Moderate | 16 (88.9) |
Severe | 1 (5.6) |
Initial therapy for cholecystitis | |
PTGBA only | 7 (38.9) |
PTGBA plus CSEMS removal | 4 (22.2) |
PTGBD only | 4 (22.2) |
Watchful waiting with antibiotics | 2 (11.1) |
CSEMS removal plus ENGBD | 1 (5.6) |
Univariate analysis |
Multivariate analysis |
|||
---|---|---|---|---|
Patients | p-value | OR (95% CI) | p-value | |
Sex | 0.594 | |||
Male | 12/72 | |||
Female | 6/46 | |||
Causative disease | n.c. | |||
Pancreatic and biliary cancer | 18/113 | |||
Others | 0/5 | |||
Previous biliary duct drainage using plastic stent | 0.553 | |||
Yes | 13/78 | |||
No | 5/40 | |||
Flow of contrast agent into gallbladder | 0.012 | 3.496 (1.184–10.322) | 0.023 | |
Yes | 10/35 | |||
No | 8/83 | |||
Median stent length | 0.287 | |||
>60 mm | 12/65 | |||
≤60 mm | 6/53 | |||
Location of SEMS placement | 0.255 | |||
Across the papilla | 15/107 | |||
Above the papilla | 3/11 | |||
Tumor involvement at the OCD | 0.003 | 4.702 (1.591–13.895) | 0.005 | |
Yes | 11/35 | |||
No | 7/83 | |||
Tumor invasion to cystic artery |
n.c. | |||
Yes | 0/3 | |||
No | 18/111 | |||
Tumor invasion to the origin of cystic artery |
0.596 | |||
Yes | 1/10 | |||
No | 17/103 | |||
Gallbladder stones | 0.767 | |||
Yes | 3/17 | |||
No | 14/101 | |||
Structure of SEMS | 0.398 | |||
Braded | 17/115 | |||
Laser-cut | 1/3 |
EPBD, endoscopic papillary balloon dilation; EST, endoscopic sphincterotomy; GDA, gastroduodenal artery; LHA, left hepatic artery; OCD, orifice of cystic duct; PHA, proper hepatic artery; RHA, right hepatic artery; SEMS, self-expandable metallic stent; SMA, superior mesenteric artery.
CSEMS, covered self-expandable metallic stent; ENGBD, endoscopic nasogallbladder drainage; PTGBA, percutaneous transhepatic gallbladder aspiration; PTGBD, percutaneous transhepatic gallbladder drainage.
CI, confidence interval; n.c., not calculated; OCD, orifice of cystic duct; OR, odds ratio; SEMS, self-expandable metallic stent. Four patients were excluded because of non-evaluability. Five patients were excluded because of non-evaluability.