Table 2.

The main endoscopic procedural characteristics of all five patients in this study

Characteristics	Case 1	Case 2	Case 3	Case 4	Case 5
Successful EGF	No. Non-adherence of encapsulated WON to the gastric wall. Stent placement also failed, so a nasocystic drainage tube was inserted instead	Yes	Yes	Yes	Yes
Fenestration sites	Posterior wall between gastric antrum and body	Upper posterior wall of gastric body	Greater curvature of gastric fundus	Posterior wall of gastric antrum	Posterior wall between gastric antrum and body
Diameter of fenestration sites (cm)	-	2	1.5	2.5	3
Total procedure time (min)	178	162	117	94	123
EUS assessment time (min)	80	53	20	33	23
Total fenestration time (min)	35	75	60	42	70
Initial fenestration (by ESD approach) time (min)	35	52	19	16	28
Expanded fenestration time (min)	-	23	41	26	42
WON fluid drainage time (min)	-	5	17	13	20
WON exploration and necrosectomy time (min)	-	27	20	6	10
Intraoperative fluid collection of WON (mL)	40 cloudy brown liquid	500 light gray liquid	1000 cloudy brown liquid	400 light gray liquid	1300 yellowish pus
Endoscopic procedural cost ($)	3549.1	2136.4	2381.4	2096.7	1941.5

EGF: Endoscopic gastric fenestration; WON: Walled-off necrosis; EUS: Endoscopic ultrasound; ESD: Endoscopic submucosal dissection.