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Gastroenterology Research and Practice
Volume 2017, Article ID 7621821, 6 pages
Research Article

Comparative Study between Plastic and Metallic Stents for Biliary Decompression in Patients with Distal Biliary Obstruction

1Endoscopy Service of Hospital A. C. Camargo, São Paulo, SP, Brazil
2Endoscopy Service of Hospital 9 de Julho, São Paulo, SP, Brazil
3Department of Diagnosis by Image, The Paulista School of Medicine, UNIFESP, Diadema, SP, Brazil

Correspondence should be addressed to José Celso Ardengh; rb.moc.lou@oslecj

Received 13 April 2017; Revised 20 June 2017; Accepted 3 July 2017; Published 6 September 2017

Academic Editor: Michel Kahaleh

Copyright © 2017 João Guilherme G. Cabral et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper presents a retrospective comparison of plastic versus metallic stents in the drainage of malignant distal biliary obstructions. We compared single plastic stents (SPS), multiple plastic stents (MPS), and metallic stents (SEMS) regarding clinical decrease of TB < 2.0 mg/dL, long-term patency, and adverse event. 58 patients (38 women) with MDBO were included. Diagnoses were 44 pancreatic adenocarcinoma (74.6%), 9 metastasis (15.5%), 3 pancreatic neuroendocrine tumors (5.1%), and 2 adenocarcinoma in the major papilla (3.4%). The number of patients included in the SPS, MPS, and SEMS was 17, 6, and 35, respectively. Comparing the survival curves with respect to obstruction, we observed a lower mean permeability of the SPS compared to that of the MPS with and of the SEMS group (). There was no statistical difference between the use of MPS, despite the small number of patients compared to the use of SEMS () to reach the satisfactory levels of bilirubin.