TABLE 2.

Relationship between sEVs CD73 in serum and clinicopathologic features (n = 54)

Characteristics	Number of patients	% proportion	CD73 expression of serum sEVs (pg/ml)	p‐Value
Age (years)				0.2974
≥60	22	40.74	140.76
<60	32	59.26	138.24
Gender				0.2251
Male	37	68.52	142.39
Female	17	31.48	138.61
Lymph node metastasis				0.0003
Non‐metastasis	34	62.96	67.14
Metastasis	20	37.04	262.97
Tumour size				0.0043
I	5	9.26	35.22
II	31	57.41	85.60
III	18	33.33	262.62
IV	0	0	0