title: A temporary self-expanding metallic stent for malignant colorectal obstruction.
abstract: OBJECTIVE
  To investigate the clinical safety and efficacy of a temporary self-expanding metallic stent (SEMS) for malignant colorectal obstruction.
  
  
  METHODS
  From September 2007 to June 2012, 33 patients with malignant colorectal obstruction were treated with a temporary SEMS. The stent had a tubular configuration with a retrieval lasso attached inside the proximal end of the stent to facilitate its removal. The SEMS was removed one week after placement. Clinical examination, abdominal X-ray and a contrast study were prospectively performed and both initial and follow-up data before and at 1 d, 1 wk, and 1 mo, 3 mo, 6 mo and 12 mo after stent placement were obtained. Data collected on the technical and clinical success of the procedures, complications, need for reinsertion and survival were analyzed.
  
  
  RESULTS
  Stent placement and removal were technically successful in all patients with no procedure-related complications. Post-procedural complications included stent migration (n = 2) and anal pain (n = 2). Clinical success was achieved in 31 (93.9%) of 33 patients with resolution of bowel obstruction within 3 d of stent removal. Eleven of the 33 patients died 73.81 ± 23.66 d (range 42-121 d) after removal of the stent without colonic re-obstruction. Clinical success was achieved in another 8 patients without symptoms of obstruction during the follow-up period. Reinsertion of the stent was performed in the remaining 12 patients with re-obstruction after 84.33 ± 51.80 d of follow-up. The mean and median periods of relief of obstructive symptoms were 97.25 ± 9.56 d and 105 ± 17.43 d, respectively, using Kaplan-Meier analysis.
  
  
  CONCLUSIONS
  Temporary SEMS is a safe and effective approach in patients with malignant colorectal obstruction due to low complication rates and good medium-term outcomes.
authors: Department of Imaging and Interventional Center, The First Affiliated Hospital of Xinxiang Medical College, Weihui 453100, Henan Province, China.
authors: Xiao-Li
authors: XL
authors: Ding
authors: Yong-Dong
authors: YD
authors: Li
authors: Rui-Min
authors: RM
authors: Yang
authors: Fen-Bao
authors: FB
authors: Li
authors: Ming-Qiu
authors: MQ
authors: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002779:Cholestasis / Q000175:diagnosis / Q000209:etiology / Q000401:mortality / Q000628:therapy*; D015179:Colorectal Neoplasms / Q000150:complications* / Q000401:mortality; D019299:Decompression, Surgical / Q000009:adverse effects / Q000295:instrumentation* / Q000401:mortality; D004724:Endoscopy / Q000009:adverse effects / Q000295:instrumentation* / Q000401:mortality; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008670:Metals; D008875:Middle Aged; D010865:Pilot Projects; D011446:Prospective Studies; D011474:Prosthesis Design; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D008670:Metals
keywords: Colorectum; Complications; Malignant obstruction; Self-expanding metallic stents