Histology

Differentiated

40

Undifferentiated

42

Size (mm)

8 - 100

Mean 35.5

Operation

Total

11

Distal

63

Proximal

8

Partial

0

LN resection

D1

11

D1+

5

≥D2

65

Unknown

1

N factor

N1

52

N2

25

N3

5

Stage

IB

52

IIA

24

IIB

5

IV

1

Range

≤D1

70

D1 ≤ D1+

7

D1+ ≤ D2

2

>D2

3