Table 2.

Pathologic characteristics.

Variable	Value
Tumor Characteristics
Tumoral size N (%)	<2 cm	19 (17,12)
	>2 cm	92 (82,88)
Resectability criteria N (%)	Resectable disease	94,6 (105)
	Borderline disease	5,4 (6)
Type of tumor N (%)	Ductal adenocarcinoma	67 (60,36)
	Ampullary tumors	25 (22,5)
	Cystadenocarcinoma	5 (4,50)
	Other	14 (12,64)
Differentiation grade N (%)	Well differentiated	35 (31,53)
	Moderate grade	64 (57,66)
	Poorly differentiated	10 (9,01)
	Undifferentiated	2 (1,80)
Adjuvant therapy N (%)	Received	64 (57,66)
Pathology report
	Vascular invasion N (%)	67 (60,36)
	Perineural invasion N (%)	76 (68,47)
	R0 margins N (%)	106 (95,05)
	Positive rate of HLA node N (%)	24 (21,62)
Tumoral relapse at 5 years %		55,8