Predictors of the patency of self-expandable metallic stents in malignant gastroduodenal obstruction

Seung Han Kim, Hoon Jai Chun, In Kyung Yoo, Jae Min Lee, Seung Joo Nam, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Hong Sik Lee, Soon Ho Um, Chang Duck Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


AIM: To investigate the predictive factors of self-expandable metallic stent patency after stent placement in patients with inoperable malignant gastroduodenal obstruction. METHODS: A total of 116 patients underwent stent placements for inoperable malignant gastroduodenal obstruction at a tertiary academic center. Clinical success was defined as acceptable decompression of the obstructive lesion within the malignant gastroduodenal neoplasm. We evaluated patient comorbidities and clinical statuses using the World Health Organization's scoring system and categorized patient responses to chemotherapy using the Response Evaluation Criteria in Solid Tumors criteria. We analyzed the relationships between possible predictive factors and stent patency. RESULTS: Self-expandable metallic stent placement was technically successful in all patients (100%), and the clinical success rate was 84.2%. In a multivariate Cox proportional hazards model, carcinoembryonic antigen (CEA) levels were correlated with a reduction in stent patency [P = 0.006; adjusted hazard ratio (aHR) = 2.92, 95%CI: 1.36-6.25]. Palliative chemotherapy was statistically associated with an increase in stent patency (P = 0.009; aHR = 0.27, 95%CI: 0.10-0.72). CONCLUSION: CEA levels can easily be measured at the time of stent placement and may help clinicians to predict stent patency and determine the appropriate stent procedure.

Original languageEnglish
Pages (from-to)9134-9141
Number of pages8
JournalWorld journal of gastroenterology
Issue number30
Publication statusPublished - 2015 Aug 14

Bibliographical note

Publisher Copyright:
© The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.


  • Carcinoembryonic antigen
  • Malignant gastroduodenal obstruction
  • Patency
  • Predictive factor
  • Stent

ASJC Scopus subject areas

  • Gastroenterology


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