Tumor characteristics Number of pazients (%) (Total=181)
Istotype
Ductal adenocarcinoma
Intraductal papillary adenocarcinoma
Cystadenocarcinoma
Other

157 (86,7%)
2 (1,1%)
2 (1,1%)
20 (11%)
Invasion
Perineural
Vascular
Lymphatic

13 (7,2%)
11 (6,1%)
6 (3,3%)
Table 2: Pathological characteristics of cancer.