Gastrointest Interv 2018; 7(2): 88-90
The vanishing stent: Repeated fracture and dissolution of nitinol gastric stents in a long term cancer survivor
Christopher Randle Lunt,* Pavan Najaran, Derek E. Edwards, Jon K Bell, Damian Mullan, Hans-Ulrich Laasch
Department of Radiology, The Christie Hospital, Manchester, UK
Department of Radiology, The Christie Hospital, 550 Wilmslow Rd, Manchester M20 4BX, UK.
E-mail address: (C.R. Lunt).
Received: February 27, 2017; Revised: May 13, 2017; Accepted: May 23, 2017; Published online: July 31, 2018.
© Society of Gastrointestinal Intervention. All rights reserved.

cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Nitinol self expandable metal stents are increasingly utilised for malignant obstruction in the proximal gastrointestinal tract. We describe a case in which repeated fracture of proximal duodenal stents with dissolution of the nitinol wire skeleton and covering membranes occurred in a long term cancer survivor. This necessitated placement of 4 stents for symptom control and to allow oral feeding until the patient’s death 20 months after the initial stent was inserted. Fracture of gastric and duodenal stents has rarely been described previously, some incidences of which were considered due to mechanical causes. Dissolution of stent metal skeletons has not previously been recognised in gastroduodenal stents but has been described in an oesophageal stent subject to reflux of gastric content and a biochemical mechanism has been proposed. With modern oncological treatment the prospect of patients outliving their stents is increasing and the need for repeat procedures should form part of the consent process.
Keywords: Gastric outlet obstruction; Prosthesis failure; Radiology, interventional; Self expandable metal stents

This Article

Cited By Articles
  • CrossRef (0)

Social Network Service