Table 1.

Patient, treatment, and radiological characteristics

		N	%
Total		85
Age (years)	Mean (SD)	64 (9.6)
Sex	Male	47	55
	Female	38	45
BMI (kg/m2)	Mean (SD)	24.4 (3.5)
ASA score	I–II	63	55
	III–IV	22	26
Preoperative biliary drainage	No	27	32
	Yes	58	68
Preoperative chemotherapy	No	11	13
	Gemcitabine-based	17	20
	FOLFIRINOX	57	67
Preoperative radiotherapy	No	70	82
	Yes	15	18
Type of preoperative imaging	CT	76	89
	CT + MRI	8	9
	MRI	1	2
Location of tumor†	Pancreatic head	70	82
	Distal (left sided) pancreas	14	16
	Unknown	1	2
Radiological response to preoperative therapy*	Complete response	0	0
	Partial response	6	10#
	Stable disease	53	88#
	Progressive disease	1	2#
	Missing	14
Tumor size on preoperative imaging (mm)	Mean (SD)	31.9 (13.2)
Preoperative vascular involvement	PV/SMV	72	85
	SMA	28	33
	CA	16	19
	CHA	18	21
	Other	21	25
Preoperative resectability status	Resectable	34	40
	Borderline resectable	32	38
	Locally advanced	19	22
Tumor size on IOUS (mm)	Mean (SD)	29.4 (13.1)

†Pancreatic head tumors include tumors of the pancreatic head, neck, and uncinate process. Distal (left sided) tumors include tumors located in the pancreatic body and tail.

*RECIST criteria

#Percentage of all patients who received preoperative therapy (n = 74)

SD Standard deviation, BMI Body mass index, ASA American Society of Anesthesiology, PV/SMV Portal vein/superior mesenteric vein, SMA Superior mesenteric artery, CA Celiac axis, CHA Common hepatic artery, IOUS Intraoperative ultrasound