Endoscopic ultrasound elastography for malignant pancreatic masses and associated lymph nodes: Critical evaluation of strain ratio cutoff value

Table 2 Baseline data and endoscopic ultrasound elastography diagnostic outcomes of pancreatic masses

	Malignancy (n = 69)	Nonmalignancy (n = 52)	P value
Age (yr), median (range)	67 (13–93)	68 (20–99)	0.8907a
Sex (female), n (%)	36 (52.2)	19 (36.5)	0.1271b
PM location, n (%)			0.6891b
Head	50 (72.5)	35 (67.3)
Neck	3 (4.3)	4 (7.7)
Body	13 (18.8)	12 (23.1)
Tail	3 (4.3)	1 (1.9)
PM diameter (mm), median (range)	37.0 (7.4–70.0)	30 (10.0–60.0)	0.0616a
Giovannini elastic score, n (%)			< 0.001b
Green (score 1 to 2)	-	11 (21.2)
Cyan (score 3)	5 (7.2)	11 (21.2)
Dark blue (score 4 to 5)	64 (92.8)	30 (57.7)
Strain ratio, median (range)	50.4 (7.8–225.0)	33.0 (2.6–321.0)	< 0.001a
Firmness/histopathology, n (%)			< 0.001b
Solid-cystic masses (n = 36)	26/69	10/52	< 0.001b
Serous cystadenoma	-	10 (19.2)
Mucinous cystadenoma	5 (7.2)	-
Mucinous cystadenocarcinoma	3 (4.3)	-
IPMN	18 (26.1)	-
Solid masses (n = 85)	43/69	42/52	< 0.001b
Normal	-	4 (7.7)
Acute pancreatitis	-	10 (19.2)
Chronic pancreatitis	-	26 (50.0)
Adenoma	-	1 (1.9)
Insulinoma	-	1 (1.9)
Adenocarcinoma	33 (47.8)	-
Lymphoma	3 (4.3)	-
PNETs	6 (8.7)	-
Pancreatoblastoma	1 (1.4)	-

^aMann-Whitney U test.

^bPearson Chi-Quadrat Test.

IPMN: Intraductal papillary mucinous neoplasm; PNET: Pancreatic neuroendocrine tumor; PM: Pancreatic masses.