Abstract
Recently, use of a colonic stent (SEMS, self-expandable metallic stent) has become one of the standard treatments for colonic malignant obstruction, including cases with colon cancer-related ileus. We investigated the usefulness of the recently-introduced Niti-S colonic stent.
Results : We trialed SEMS in 156 cases of colorectal stenosis during the period 1993 to 2011. Several types of SEMS were used in the colon : Z-stent, Wallstent, Ultraflex, WallFlex and Niti-S. In 146 cases of the 156 cases (94%) , stents were successfully inserted.
The Niti-S through the scope (TTS) type of stent (TaeWoong Medical Co., Ltd, South Korea) was introduced in 2006 and successful insertion was performed in 26 of 27 cases (96%) . In one case the stent migrated from the stenosis site after initial insertion, but correct positioning was possible at the second attempt. It suggested that it is better to improve the SEMS visibility. No serious complications such as perforation were seen after the insertion procedure. Final results of the procedure were : technical success rate 96.3%, clinical success 85.2%, early complications 3.7% and late complications 7.4%.
Conclusion : Clearly colonic SEMS is a low invasive procedure, and is effective for improvement of patient QOL. Niti-S─a new TTS type of SEMS-has showed feasibility for use as an effective and safe stent.
