Application of a glasses-free 3D laparoscopic system in radical gastrointestinal cancer surgery

Table 3 Pathological examination results of patients in the naked eye 3D gastric cancer group and glass 3D gastric cancer group

Characteristic	Naked-eye 3D gastric cancer group (n = 16)	Glass 3D gastric cancer group (n = 52)	P value
Tumor diameter (cm)	3.0 (2.0, 5.0)	3.5 (2.0, 6.0)	> 0.05
Tumor T staging			> 0.05
T1	5	13
T2	3	10
T3	1	4
T4	7	25
Vascular invasion			> 0.05
No	8	33
Yes	8	19
Neurological invasion			> 0.05
No	11	29
Yes	5	23
Cancer nodules			> 0.05
No	14	50
Yes	2	2
Tumor N staging			> 0.05
N0	2	26
N1	3	6
N2	2	7
N3	4	13
Positive number of lymph nodes	6 (1, 15)	1 (0, 7)	< 0.05
Total number of lymph node dissection	28 (22, 43)	29 (21, 39)	> 0.05
Clinical staging of TNM			> 0.05
Phase I	4	21
Phase II	3	10
Phase III	9	20
Phase IV	0	1

TNM: Tumor-node-metastasis.