Table 1: Patients’ general characteristics.

Male/FemaleNo. of patients%
9/1242.9/57.1

Tumor anatomic distribution
 Head1781
 Body14.8
 Tail314.3

Performance status
 90–100%1571.4
 70–80%523.8
 50–60%14.8

Tumor infiltration
 T114.8
 T2 314.3
 T31781

Nodal infiltration
 N0942.9
 N11257.1

TNM stage
 I314.3
 II628.6
 III1257.1

Degree of differentiation
 G1419
 G2942.9
 G3838.1

Residual tumor
 R02095.3
 R114.7