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

Table 5 Postoperative pathological examination of patients with colorectal cancer

Characteristic	Naked-eye 3D gastric cancer group (n = 19)	Glass 3D gastric cancer group (n = 78)	P value
Tumor diameter (cm)	5.0 (3.0, 6.0)	4.0 (3.0, 5.0)	> 0.05
Tumor T staging			> 0.05
T1	3	7
T2	2	16
T3	7	43
T4	7	12
Vascular invasion			> 0.05
No	16	64
Yes	3	14
Neurological invasion			> 0.05
No	17	66
Yes	2	12
Cancer nodules			> 0.05
No	18	71
Yes	1	7
Tumor N staging			> 0.05
N0	8	46
N1-N2	11	32
Positive number of lymph nodes	0 (0, 4)	0 (0, 1)	> 0.05
Total number of lymph node dissection	17 (14, 23)	16 (13, 19)	> 0.05
Number of qualified lymph node dissection			> 0.05
Yes	18	74
No	1	4
Clinical staging of TNM			> 0.05
Phase I	2	14
Phase II	3	17
Phase III	12	40

TNM: Tumor-node-metastasis.