Table 1 Patient Characteristics

Age (year)

60.5 (39–78)

Gender (n, %)

 Male

43 (69.4 %)

 Female

19 (30.6 %)

Grade (n, %)

 Grade 1

4 (6.5 %)

 Grade 2

30 (48.4 %)

 Grade 3

28 (45.1 %)

TNM stage (n, %)

 pT2N0

14 (22.6 %)

 pT2N+

5 (8.1 %)

 pT3N0

11 (17.7 %)

 pT3N+

16 (25.8 %)

 pT4aN0

3 (4.8 %)

 pT4aN+

13 (21.0 %)

Follow-up time (months)

36.1 (16–64)