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악성 담관협착에서 Niti-S 스텐트 및 Wallstent의 비교

Other Titles
 A New Covered Biliary Metal Stent versus Uncovered Wallstent for Malignant Biliary Obstruction 
 서정훈  ;  송시영  ;  박승우  ;  이세준  ;  정준표  ;  정재복  ;  강진경 
 Korean Journal of Gastrointestinal Endoscopy (대한소화기내시경학회지), Vol.23(2) : 93-99, 2001 
Journal Title
Korean Journal of Gastrointestinal Endoscopy(대한소화기내시경학회지)
Issue Date
악성 담관협착 ; 막을 부착한 Niti-S 스텐트 ; 막을 부착하지 않은 Wallstent
Background/Aims: In order to provide a complete ob- stacle to tumoral growth, we designed a new self- expandible metal stent fully covered with polyurethane membrane. The purpose cf the study was to compare the safety and effectiveness of a new membrane-covered Niti-S stent versus conventional uncovered Wallstent. Methods: In a prospective trial, 59 patients with malignant extrahepatic biliary obstruction received either a newly developed covered metal stent (Niti-S stent, 30 cases) or an uncovered metal stent (Wallstent, 29 cases) by the endoscopic trans-papillary route. Results: Effective biliary decompression was achieved in all patients initially, and short-term results were similar in both groups. Stent failure was observed in 4 of the 30 patients (13%) after a median period of 165 days in the Niti-S group and in 8 of the 29 patients (28%) after a median period of 152 days in the Wallstent group. The reasons of stent failure were occlusion (n=3) and migration (n=l) in the covered Niti-S stent group and occlusion (n=8) in uncovered Wallstent group. According to the Kaplan-Meier life table analysis, the patency rates after 90, 180, and 360 days were 100%, 90%, and 74% in covered Niti-S stent group and 100%, 73%, and 61% in uncovered Wallstent group respectively. The occluded membrane-covered Niti-S stent was easily removed endoscopically and a new Niti-S stent was reinserted in one patient. Conclusions: The new, membrane-covered Niti-S stent has a lower stent failure rate and a tendency toward long-term patency rate compared to uncovered Wallstent. The covering may effectively prevent tumor ingrowth and it is sometimes possible to remove an occluded Niti-S stent.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Jin Kyung(강진경)
Park, Seung Woo(박승우) ORCID logo https://orcid.org/0000-0001-8230-964X
Suh, Jeong Hoon(서정훈)
Song, Si Young(송시영) ORCID logo https://orcid.org/0000-0002-1417-4314
Lee, Se Joon(이세준) ORCID logo https://orcid.org/0000-0002-2695-2670
Chung, Jae Bock(정재복)
Chung, Jun Pyo(정준표)
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