Fig. 2

Intraluminal radioactive stent, self-expanding metal stent. Kaplan-Meier curves of disease-specific survival. Comparison of disease-specific survival between group A (self-expanding metal stent) and group B (intraluminal radioactive stent). The mean disease-specific survival period was similar in group A compared with that in group B: 3.4 ± 0.3 months vs. 3.7 ± 0.4 months, respectively. There was no significant difference in survival (P > 0.05)