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. 2022 Oct 10;55(3):261–266. doi: 10.1055/a-1924-4711

Table 2. Treatment outcomes of the gel immersion endoscopic resection (GIER) and underwater endoscopic mucosal resection (UEMR) groups.

GIER UEMR P value
Tumor size, median (range), mm 7 (2–18) 5 (3–10) 0.48 1
Specimen size, median (range), mm 14 (7–27) 7.5 (4–11) < 0.001 1
Pathology, n (%) 0.18 3

  • Adenocarcinoma

 1 (4.6) 4 (22.2)

  • Adenoma

 18 (81.8) 13 (72.2)

  • Other

 3 (13.6) 1 (5.6)
Procedure time, median (range), minutes 2.75 (1–3.5) 3 (2–10) 0.01 1
En bloc resection, n (% [95 %CI]) 22 (100 [85.1 %–100 %]) 15 (83.3 [60.8 %–94.2 %]) 0.08 2
R0 resection, n (% [95 %CI]) 21 (95.5 [78.2 %–99.2 %]) 12 (66.7 [43.7 %–83.7 %]) 0.03 2
Adverse events, n 0 (0) 0 (0)
Liquid consumption, median (range), mL 180 (60–300) No data