title: [Sealing of tracheoesophageal fistula using Sigma covered mental stents].
abstract: OBJECTIVE
  To explore the possibilities and efficiency of Sigma covered stents for the treatment of tracheoesophageal fistula (TEF).
  
  
  METHODS
  Between 2006 and 2009, 10 Sigma covered mental stents had been placed by guidance of bronchoscopy and/or fluoroscopy in 8 patients with 9 tracheoesophageal fistulas. Among them, 7 fistulas were caused by cancer and 2 by mechanical damage. Seven fistulas were located in lower part of trachea and 1 each in the middle and upper parts.
  
  
  RESULTS
  Six Y-shaped, 2 L-shaped and 2 I-shaped stents were placed respectively in 8 patients with 9 TEFs. All the TEFs were effectively sealed by the stents except for 1 massive lower and 1 upper fistulas. One mechanical fistula was cured within 1 year of stent placement. The mean survival period of all patients was 8 months.
  
  
  CONCLUSIONS
  By sealing the fistula with a Sigma covered stent, severe respiratory infection may be successfully controlled in patients with TEFs with a major improvement of quality of life.
authors.affiliation: Minimal Invasive Tumor Therapy Center, Bejing Coal General Hospital, Bejing 100028, China. wanghongwu2003@yahoo.com.cn
authors.forename: Hong-wu
authors.initials: HW
authors.lastname: Wang
authors.forename: Ling-fei
authors.initials: LF
authors.lastname: Luo
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Yun-zhi
authors.initials: YZ
authors.lastname: Zhou
authors.forename: Hong-ming
authors.initials: HM
authors.lastname: Ma
authors.forename: Heng
authors.initials: H
authors.lastname: Zou
authors.forename: Dong-mei
authors.initials: DM
authors.lastname: Li
mesh_terms: D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D015607:Stents; D014138:Tracheoesophageal Fistula / Q000601:surgery*
chemical_list: D008670:Metals