Covered Retrievable Expandable Nitinol Stents in Patients with Benign Esophageal Strictures: Initial Experience

Abstract

Use of retrievable expandable nitinol stents seems to be a safe and effective method of treatment in selected patients with benign esophageal strictures.

Severe hyperplastic tissue stenosis of a novel biodegradable esophageal stent and subsequent successful management with high-pressure balloon dilation

“…However, hyperplastic tissue reaction occurs in conjunction with biodegradable stent degradation and the severity of the tissue response and the time to complete stent degradation, both important factors when considering patients for placement of a biodegradable stent, are not documented. Hyperplastic tissue ingrowth occurs in up to 50 % of SEMS placed for benign esophageal strictures [1]. While this tissue reaction is expected for biodegradable stents [5,6], ours is the first report of significant post-stent dysphagia due to stenosis.…”

“…Excellent symptom response has been sustained for over 8 months (no dysphagia). Patient outcomes after placement of selfexpanding metal stents (SEMS) and selfexpanding plastic stents (SEPS) for benign esophageal strictures are disappointing due to notable stent-related complications, including hyperplastic tissue ingrowth (SEMS) [1] and stent migration (SEPS) [2]. Novel self-expanding biodegradeable stents are an alternative and may benefit patients with benign esophageal strictures and achalasia, and have the potential to become primary therapy, replacing other stent types and balloon dilation [3,4].…”

Palliative treatment of malignant gastroduodenal obstruction with metallic stent: prospective comparison of covered and uncovered stents

“…The expanding force of covered stents is transferred to the tumour through a cover membrane, which causes tumour shrinkage, reduces the friction effect of the tumour and increases the risk of migration [19,21]. To prevent stent migration, some changes have been made in their basic design, including a proximal funnel, a partial covering membrane and a shoulder at the ends [21,22].…”

Temporary Placement of Covered Retrievable Expandable Nitinol Stents with Barbs in High-risk Surgical Patients with Benign Prostatic Hyperplasia: Work in Progress

“…In the case of benign strictures of the esophagus and in the canine BPH model, 4 -8 weeks is suggested as the optimal time for removal of stents because formation of new strictures and recurrence of strictures rarely occurs within that period (18,21). In our series, however, no new strictures formed either above or below the stent in any patient.…”