title: The Effectiveness of Self-Expandable Metallic Stent Insertion in Treating Right-Sided Colonic Obstruction: A Comparison between SEMS and Decompression Tube Placement and an Investigation of the Safety and Difficulties of SEMS Insertion in Right Colons.
abstract: Objectives. Self-expandable metallic stent (SEMS) is widely used to treat malignant colonic obstruction. However, most reports about SEMS insertion have concentrated on the left colon. This study aimed to (1) investigate the effectiveness of SEMS insertion compared with conventional decompression tube for right-sided colonic obstruction and (2) compare the safety and technical success of SEMS insertion between left- and right-sided colonic obstructions. Methods. The data from thirty-seven patients who underwent SEMS or conventional decompression tube placement for malignant colonic obstruction in our hospital were analyzed retrospectively. Technical and clinical success, complications, and technical difficulties were analyzed. We compared the results between SEMS insertion and decompression tube placement in right colons and the outcomes of SEMS insertion between right- and left-sided colonic obstructions. Results. For right colons, the clinical success rate of SEMS insertion (100%) was significantly higher than that of decompression tube placement (55.9%). Concerning SEMS insertion, the technical difficulty and safety of SEMS insertion were similar between right- and left-sided colonic obstructions. Conclusion. SEMS insertion for right-sided colon is significantly more effective than conventional decompression tube placement, and this procedure was safer and less technically challenging than expected. SEMS insertion should be considered for treating right-sided malignant colonic obstruction.
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Rintaro
authors.initials: R
authors.lastname: Moroi
authors.affiliation: Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo, Aoba-ku, Sendai, Miyagi 980-8574, Japan.
authors.forename: Katsuya
authors.initials: K
authors.lastname: Endo
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Ichikawa
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nagai
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Shinkai
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan ; Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo, Aoba-ku, Sendai, Miyagi 980-8574, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Kimura
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Fumitake
authors.initials: F
authors.lastname: Ishiyama
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Yaguchi
authors.affiliation: Department of Gastroenterology, Iwate Prefectural Isawa Hospital, 61 Ryugababa, Mizusawa-Ku, Oshu, Iwate 023-0865, Japan.
authors.forename: Shoichi
authors.initials: S
authors.lastname: Kayaba
authors.affiliation: Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo, Aoba-ku, Sendai, Miyagi 980-8574, Japan.
authors.forename: Tooru
authors.initials: T
authors.lastname: Shimosegawa