Wei-Zhong Zhou, Presenter: Nothing to Disclose

Ho-Young Song MD, Abstract Co-Author: Nothing to Disclose

Jung-Hoon Park MS, RT, Abstract Co-Author: Nothing to Disclose

Ji Hoon Shin MD, Abstract Co-Author: Nothing to Disclose

Jin Hyoung Kim MD, Abstract Co-Author: Nothing to Disclose

Young Chul Cho BS, Abstract Co-Author: Nothing to Disclose

Jong Kun Jang, Abstract Co-Author: Nothing to Disclose

Eun Jung Jun PhD, Abstract Co-Author: Nothing to Disclose

Focused on evaluating the factors that influence stent migration following placement of single design stent was not previously reported. The purpose of this study was to evaluate the incidence, prognostic factors, and secondary management of stent migration in patients with malignant esophageal strictures.

A retrospective cohort study was performed in a single, tertiary–referral, university hospital to identify the incidence, management, and prognostic factors for stent migration in 332 consecutive patients with placement of a retrievable, expandable, metallic stent for malignant esophageal strictures. Stent migration was classified into four patterns as locations of a migrated stent when migrated stents were detected. A multivariate logistic regression model was used to identify the independent predictive factors associated with stent migration.

Stent migration occurred in 42 (12.6%) of 332 patients. Migration was partial (n=21) or complete (n=21), and nine, 12, 11, and 10 patients had patterns I, II, III, and IV, respectively. Multivariate analysis identified the following prognostic factors: esophagogastic junction strictures caused by cancer of the gastric cardia (OR, 3.330; 95% CI, 0.156–9.698; p = 0.004), patients who underwent anti-cancer treatment after stent placement (OR, 17.514; 95% CI, 7.094–43.235; p < 0.001), and patients with a longer survival time (OR, 2.994; 95% CI, 0.991–7.996; p < 0.001). Secondary management was needed for 33/42 (79%) patients. The strictures in the remaining nine patients improved throughout the follow-up.

Stent migration occurs most commonly in patients with cancer of the gastric cardia, longer survival time and who underwent anti-cancer treatment following stent placement. Stent migration is successfully managed by further intervention.

Accurate knowledge of the pattern of stent migration is important for its successful management.

Zhou, W, Song, H, Park, J, Shin, J, Kim, J, Cho, Y, Jang, J, Jun, E, Migration of Retrievable, Expandable Metallic Stents Inserted for Malignant Esophageal Strictures: Incidence, Management, and Prognostic Factors in 332 Patients.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14010079.html