Minimally invasive surgery for submucosal (subepithelial) tumors of the stomach

Table 1 Comparative analysis of open vs laparoscopic surgery for gastric gastrointestinal stromal tumor

	Nishimura et al[39] (2007)			Karakousis et al[40] (2011)			De Vogelaere et al[41] (2013)
	OR	LR	P value	OR	LR	P value	OR	LR	P value
Number of patients	28	39		40	40		16	37
Operative time1 (min)	115	136	0.06	89 (30-249)	96 (48-200)	0.320	155 ± 48.1	48.5 ± 16.0	< 0.001
EBL (mL)	80	45	0.26	100 (5-400)	25 (5-200)	0.006
Hospital stay (d)				7 (4-25)	4 (2-7)	0.002	16.9 ± 10.6	8.2 ± 3.3	0.007
Morbidity				25%	15%	1%	18.9%	2.7%	0.077
Mortality	0	0		0%	0%		6.3%	0%

¹Regarding the operation time, Nishimura et al[39] and De Vogelaere et al[41] reported mean operation time, and Karakousis et al[40] reported median operation time. GIST: Gastrointestinal stromal tumor; OR: Open resection; LR: Laparoscopic resection; EBL: Estimated blood loss.