Figure 3

The duodenal balloon group showed no significant difference in intestinal volume before (213.4 ± 118.8 mL) or after (256.0 ± 124.4 mL) ESD. The regular group showed a significant difference before (214.0 ± 29.85 mL) and after (350.9 ± 33.17 mL) ESD (P = 0.005). The Δvolume before and after ESD was significantly lower in the duodenal balloon group (25.14 ± 24.91 mL) than in the regular group (130.15 ± 86.52 mL) (P = 0.00027).