Copyright
©The Author(s) 2020.
World J Gastrointest Surg. Apr 27, 2020; 12(4): 138-148
Published online Apr 27, 2020. doi: 10.4240/wjgs.v12.i4.138
Published online Apr 27, 2020. doi: 10.4240/wjgs.v12.i4.138
Group W (n = 37) | Group N (n = 53) | Group MD (n = 20) | Total (n = 110) | |
Patients’ characteristics | ||||
Age (yr, mean ± SD) | 71.4 ± 11.8 | 74.3 ± 13.6 | 73.7 ± 9.6 | 73.5 ± 12.5 |
Male/Female | 18/19 | 28/25 | 15/5 | 61/49 |
PS score (mean ± SD) | 1.6 ± 1.2 | 1.9 ± 1.2 | 2.3 ± 1.0 | 1.9 ± 1.2 |
Therapeutic intent | ||||
BTS | 19/37 (51.4%) | 32/53 (60.4%) | 10/20 (50%) | 61/110 (55.5%) |
PAL | 18/37 (48.6%) | 21/53 (39.6%) | 10/20 (50%) | 49/110 (44.5%) |
Tumor characteristics | ||||
Obstruction/tumor site | ||||
Right colon | 8/37 (21.6%) | 14/53 (26.4%) | 6/20 (30%) | 28/110 (25.4%) |
Left colon | 27/37 (73.0%) | 38/53 (71.7%) | 10/20 (50%) | 75/110 (68.2%) |
Rectum | 2/37 (5.4%) | 1/53 (1.9%) | 4/20 (20%) | 7/110 (6.4%) |
Etiology of colorectal obstruction | ||||
Primary colorectal cancer | 30/37 (81.1%) | 49/53 (92.5%) | 13/20 (65%) | 92/110 (83.6%) |
Metastatic lesion | 7/37 (18.9%) | 4/53 (7.5%) | 7/20 (35%) | 18/110 (16.4%) |
Noncancerous stenosis | 0/37 (0%) | 0/53 (0%) | 0/20 (0%) | 0/110 (0%) |
Stenosis length [cm, median (range)] | 5.0 (2.0-13.0) | 5.0 (2.0-11.0) | 6.2 (2.5-11.5) | 5.0 (2.0-13.0) |
Group W | Group N | Group MD | Total | |
Technical success rate | 37/37 (100%) | 53/53 (100%) | 20/20 (100%) | 110/110 (100%) |
Stent length | ||||
6 cm | 24/37 (64.9%) | 12/53 (22.6%) | 3/20 (15%) | 39/110 (35.5%) |
8 cm | NA | 17/53 (32.1%) | 7/20 (35%) | 24/110 (21.8%) |
9 cm | 11/37 (29.7%) | NA | NA | 11/110 (10.0%) |
10 cm | NA | 18/53 (34.0%) | 6/20 (30%) | 24/110 (21.8%) |
12 cm | 2/37 (5.4%) | 6/53 (11.3%) | 4/20 (20%) | 12/110 (10.9%) |
Stent diameter | ||||
18 mm | NA | 6/53 (11.3%) | NA | 6/110 (5.5%) |
22 mm | 30/37 (81.1%) | 47/53 (88.7%) | 20/20 (100%) | 97/110 (88.2%) |
25 mm | 7/37 (18.9%) | NA | NA | 7/110 (6.3%) |
Procedure time (min, mean ± SD) | 32.6 ± 14.0 | 33.6 ± 23.7 | 31.3 ± 11.2 | 33.0 ± 19.1 |
Clinical success rate | 33/37 (89.2%) | 51/53 (96.2%) | 20/20 (100%) | 104/110 (94.5%) |
BTS | 19/19 (100%) | 31/32 (96.9%) | 10/10 (100%) | 60/61 (98.4%) |
PAL | 14/18 (77.8%) | 20/21 (95.2%) | 10/10 (100%) | 44/49 (89.8%) |
CROSS before stent placement (mean ± SD) | 1.6 ± 1.3 | 1.2 ± 1.0 | 1.4 ± 0.9 | 1.4 ± 1.1 |
0 | 12/37 (32.5%) | 10/53 (18.9%) | 3/20 (15%) | 25/110 (22.7%) |
1 | 8/37 (21.6%) | 32/53 (60.4%) | 9/20 (45%) | 49/110(44.6%) |
2 | 3/37 (8.1%) | 4/53 (7.5%) | 5/20 (25%) | 12/110 (10.9%) |
3 | 13/37 (35.1%) | 5/53 (9.4 %) | 3/20 (15%) | 21/110 (19.1%) |
4 | 1/37 (2.7%) | 2/53 (3.8%) | 0/20 (0%) | 3/110 (2.7%) |
CROSS after stent placement (mean ± SD) | 3.8 ± 0.8a | 3.8 ± 0.7a | 3.8 ± 0.5a | 3.8 ± 0.7a |
0 | 0/37 (0%) | 0/53 (0%) | 0/20 (0%) | 0/110 (0%) |
1 | 3/37 (8.1%) | 2/53 (3.8%) | 0/20 (0%) | 5/110(4.6%) |
2 | 0/37 (0%) | 2/53 (3.8%) | 1/20 (5.0%) | 3/110 (2.7%) |
3 | 0/37 (0%) | 0/53 (0 %) | 2/20 (10%) | 2/110 (1.8%) |
4 | 34/37 (91.9%) | 49/53 (92.4%) | 17/20 (85%) | 110/110 (90.9%) |
Group W | Group N | Group MD | Total | |
Early (≤ 7 d) | ||||
Perforations | 0/37 (0%) | 2/53 (3.8%)1 | 0/20 (0%) | 2/110 (1.8%) |
Bleeding | 0/37 (0%) | 0/53 (0%) | 0/20 (0%) | 0/110 (0%) |
Poor expansion | 1/37 (2.7%) | 0/53 (0%) | 0/20 (0%) | 1/110 (0.9%) |
Abdominal pain | 3/37 (8.1%) | 0/53 (0%) | 0/20 (0%) | 3/110 (2.7%) |
Stent occlusion | 0/37 (0%) | 0/53 (0%) | 0/20 (0%) | 0/110 (0%) |
Fever | 1/37 (2.7%) | 0/53 (0%) | 0/20 (0%) | 1/110 (0.9%) |
Late (> 7 d) | ||||
Perforations | 4/36 (11.1%)a2 | 0/51 (0%)a | 0/20 (0%) | 4/107 (3.7%) |
Bleeding | 0/36 (0%) | 0/51 (0%) | 0/20 (0%) | 0/107 (0%) |
Stent migration | 0/36 (0%) | 0/51 (0%) | 0/20 (0%) | 0/107 (0%) |
Abdominal pain | 0/36 (0%) | 0/51 (0%) | 0/20 (0%) | 0/107 (0%) |
Stent occlusion | 1/36 (2.8%) | 2/51 (3.9%) | 0/20 (0%) | 3/107 (2.8%) |
- Citation: Miyasako Y, Kuwai T, Ishaq S, Tao K, Konishi H, Miura R, Sumida Y, Kuroki K, Tamaru Y, Kusunoki R, Yamaguchi A, Kouno H, Kohno H. Newly developed self-expandable Niti-S MD colonic metal stent for malignant colonic obstruction. World J Gastrointest Surg 2020; 12(4): 138-148
- URL: https://www.wjgnet.com/1948-9366/full/v12/i4/138.htm
- DOI: https://dx.doi.org/10.4240/wjgs.v12.i4.138