Table 1 Characteristics of patients, primary tumors, and metastases

Age

67.1 ± 3.48

64.1 ± 3.45

0.522

Male/female

4/2

5/6

0.620

T stage

 1

0

0

1.0

 2

1

1

1.0

 3

3

7

0.644

 4

2

3

1.0

N stage

 0

3

4

0.644

 1

2

3

1.0

 2

1

4

0.6

Grading

 1

0

0

1.0

 2

4

8

1.0

 3

2

3

1.0

Number of metastases

3.12 ± 1.28

2.56 ± 0.55

0.607

Size of metastases

6.80 ± 1.46

4.06 ± 0.55

0.126

Syn/meta

3/3

6/5

1.0

Preoperative chemotherapy

2

4

1.0

 Tumor size at the time of diagnosis (before preoperative chemotherapy)^a

4.90 ± 1.60

2.95 ± 1.20

0.161

 Tumor size before resection (after preoperative chemotherapy)^a

2.85 ± 0.15

2.35 ± 1.01

0.547