Use of the 25 mm flanged esophageal z stent for Malignant dysphagia: A prospective multicenter trial

Richard A. Kozarek, Shirley Raltz, Norman Marcon, Paul Kortan, Gregory Haber, Charles Lightdale, Peter Stevens, Glen Lehman, Douglas Rex, Stanley Benjamin, David Fleischer, Roshan Bashir, Steven Fry, Irving Waxman, Jay Benson, John Polio

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Background: An initial multicenter study using a 21 mm flanged esophageal Z stent demonstrated excellent palliation but an 11% immediate complication rate at placement and a 27% migration rate at 1 month. This North American multicenter trial prospectively studied a 25 mm flanged Z stent to define its palliative ability and whether the increased diameter affected placement or migration problems. Methods: Fifty patients who had esophageal Z stents at seven university or regional referral hospitals were prospectively studied. Indications for prosthesis placement, previous therapy, patient demographics, incidence of concomitant tracheoesophageal fistula, and degree of dysphagia were defined, as were procedural and subsequent stent-related problems, survival times, the ability to occlude a tracheoesophageal fistula, and subsequent degree of dysphagia. Results: Twenty-four patients had infiltrating malignancy (16 exophytic and 10 extrinsic), 9 of whom had concomitant tracheoesophageal fistulas. Ten patients (20%) had misplaced stents requiring retrieval and replacement, 12 patients (24%) had subsequent stent-related problems including exsanguination (2), aspiration (3), tumor overgrowth (3), and postplacement migration (4) (8%). There was statistically significant improvement in prestent versus poststent dysphagia and two thirds of patients had complete occlusion of their tracheoesophageal fistula. Conclusions: Redesign of the esophageal Z stent has decreased the migration rate without increasing placement or subsequent erosion problems. Its efficacy appears comparable to the currently marketed Z stent for the palliation of malignant dysphagia and occlusion of tracheoesophageal fistula.

Original languageEnglish (US)
Pages (from-to)156-160
Number of pages5
JournalGastrointestinal endoscopy
Issue number2
StatePublished - 1997

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Gastroenterology


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