Evidence map›Paper›PMID 29218484›Full record

ArticleDigestive diseases and sciences2018

A Prospective Multicenter Study of a Fully Covered Metal Stent in Patients with Distal Malignant Biliary Obstruction: WATCH-2 Study.

Hirofumi Kogure, Shomei Ryozawa, Iruru Maetani, Yousuke Nakai, Hiroshi Kawakami, Ichiro Yasuda, Hitoshi Mochizuki, Hirotoshi Iwano, Hiroyuki Maguchi, Mitsuhiro Kida and 9 more

Abstract readComparative StudyMulticenter Study
PubMed Publisher
In one paragraph

Article in Digestive diseases and sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed.

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  20. Self-Expanding Metallic Biliary Stents: Time to Suit Up?Digestive diseases and sciences · 2018
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors.

Hirofumi KogureDepartment of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Shomei RyozawaDepartment of Gastroenterology, International Medical Center, Saitama Medical University, 1397-1, Yamane, Hidaka-shi, Saitama, Japan.
Iruru MaetaniDivision of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro, Tokyo, Japan.
Yousuke NakaiDepartment of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Hiroshi KawakamiDepartment of Gastroenterology, Graduate School of Medicine, Hokkaido University, Kita 15 Nishi 7 Kita-ku, Sapporo, Japan.
Ichiro YasudaFirst Department of Internal Medicine, Gifu University Hospital, 1-1 Yanagido, Gifu, Japan.
Hitoshi MochizukiDepartment of Gastroenterology, Yamanashi Prefectural Central Hospital, 1-1-1 Fujimi, Kofu, Japan.
Hirotoshi IwanoDepartment of Gastroenterology, International Medical Center, Saitama Medical University, 1397-1, Yamane, Hidaka-shi, Saitama, Japan.
Hiroyuki MaguchiCenter for Gastroenterology, Teine-Keijinkai Hospital, 1-12-1-40, Maeda, Teine-ku, Sapporo, Japan.
Mitsuhiro KidaDepartment of Gastroenterology, Kitasato University East Hospital, 2-1-1, Asamizodai Minami-ku, Sagamihara, Japan.
Kensuke KubotaDivision of Gastroenterology, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-ku, Yokohama, Japan.
Tsuyoshi MukaiDepartment of Gastroenterology, Gifu Municipal Hospital, 7-1 Kashima-shi, Gifu, Japan.
Osamu HasebeDepartment of Gastroenterology, Nagano Municipal Hospital, 1333-1 Oaza Tomitake, Nagano, Japan.
Yoshinori IgarashiDivision of Internal Medicine, Department of Gastroenterology and Hepatology, Omori Medical Center, Toho University, 6-11-1 Omori-Nishi Ota-ku, Tokyo, Japan.
Keiji HanadaDepartment of Gastroenterology, Onomichi General Hospital, 1-10-23 Hirahara, Onomichi-shi, Hiroshima, Japan.
Atsushi IrisawaDepartment of Gastroenterology, Aizu Medical Center, Fukushima Medical University, 21-2 Tanisawa Kawahigashi-machi, Aizuwakamatsu-shi, Fukushima, Japan.
Kei ItoDepartment of Gastroenterology, Sendai City Medical Center, 5-2-1, Tsurugaya Miyagino-ku, Sendai-shi, Miyagi, Japan.
Takao ItoiDepartment of Gastroenterology and Hepatology, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan.
Hiroyuki IsayamaDepartment of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. isayama-tky@umin.ac.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBoth fully covered (FC) and partially covered (PC) self-expandable metal stents (SEMSs) are now commercially available for distal malignant biliary obstruction (MBO). While FCSEMS can be easily removed at the time of re-interventions, it is theoretically prone to migration. However, few comparative data between FC and PC SEMSs have been reported.

aimsThe aim of this study was to compare clinical outcomes of FCSEMS with those of PCSEMS.

methodsThis was a multicenter, prospective study of FCSEMS for unresectable distal MBO with a historical control of PCSEMS, which was previously reported as the WATCH study. The primary outcome was recurrent biliary obstruction (RBO), and secondary outcomes were stent migration, stent removal, stent-related adverse events, and survival.

resultsA total of 151 cases with unresectable distal MBO undergoing FCSEMS placement were enrolled and compared with a historical cohort of 141 cases undergoing PCSEMS placement. No significant differences were found in the rate of RBO (29 vs. 33%; P = 0.451), time to RBO (318 vs. 373 days; P = 0.382), and survival (229 vs. 196 days; P = 0.177) between FCSEMS and PCSEMS. The rate of stent migration also did not differ significantly between the two groups (14 vs. 8%; P = 0.113). The removal of FCSEMSs was successful in all 24 attempted cases (100%).

conclusionsFCSEMSs appeared comparable to PCSEMSs in terms of RBO without a significant increase in stent migration rate in patients with unresectable distal MBO. CLINICAL TRIAL REGISTRATION NUMBER: UMIN000007131.

Indexed as

Self Expandable Metallic StentsAdultAgedAged, 80 and overCholangiopancreatography, Endoscopic RetrogradeCholestasisDevice RemovalDigestive System NeoplasmsFemaleForeign-Body MigrationHumansJapanKaplan-Meier EstimateMaleMiddle AgedProportional Hazards ModelsEndoscopic retrograde cholangiopancreatographyMalignant biliary obstructionSelf-expandable metal stent

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.