Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access
Article copyright, the authors; Journal compilation copyright, Gastroenterol Res and Elmer Press Inc
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Original Article

Volume 1, Number 1, December 2008, pages 40-44

Management of Malignant Gastric Outlet Obstruction with Expandable Metallic Stent Placement


Figure 1.
Figure 1. Stents used in this study. a, Duodenal stent; b, pylorus stent.
Figure 2.
Figure 2. Stent delivery system. (a), stent delivery system; (b), the front tip of the delivery system; (c), the handler of the delivery system.
Figure 3.
Figure 3. Expandable metallic stent placement for malignant gastric outlet obstruction under endoscopy in a male patient (46 years old, progressive gastric pylorus cancer). (a), stricture of the pylorus; (b), upper part of the pylorus stent; (c), middle part of the pylorus stent; (d), lower part of the pylorum stent.


Table 1. Baseline characteristic of the 9 patients
Clinical characteristicsNo. of patients
Sex (Male/female)4/5
Age (year, mean)46-88 (75)
Cancer sites
  Antrum-pylorus invasion cancer5
  Gastric corpus, antrum and pylorus invasion cancer2
  Gastric corpus adenosquamous carcinoma1
  Signet ring cell carcinoma4
Stoler grade(3)
Extra-gastric Metastasis4


Table 2. Efficacy of stents placement
ObservationsNo. of patients
CR, complete response; PR, partial response; MR, minor reponse; NR, no response.
Post-procedural obstruction
  Vomiting, nausea6
  Upper abdominal pain4
  Enteric infection1
  Electrolytes disorder1
Mean stent potency53.4 day
  10-15 day3
  1-2 mo2
  >3 mo4