Table 1.

Studies with more than 100 cases, describing short term results for each VATS modality.

Authors	Approach	Years	N° of patients	Complications (n)	Conversion	Length of stay (median)	30 days Mortality (n)
Onaitis (15)	Biportal	2006	500	119	8 (1,6%)	3	6 (1,2%)
Kim (16)	Triportal posterior	2010	740	76	36 (4,9%)	NA	9 (1,3%)
Hansen (13)	Triportal anterior	2010	169	103	13 (7,7%)	6	0 (0%)
Gonzales Rivas (17)	Uniportal	2013	102 (5 pneumonectomies)	14	5 (4,9%) (3 to open, 2 to biportal VATS)	3	0 (0%)
Song (18)	subxhypoid	2016	105	11	8 (2 to open, 6 to standard VATS	5,4	0%

In the table we reported 5 case series, one for each technique, with more than 100 cases. (13, 15, 17, 18). Most studies are the initial results of the authors or centers standardizing the technique.