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

Table 4 Baseline data, endoscopic ultrasound, and endoscopic ultrasound elastography diagnostic outcomes of the associated lymph nodes

	Malignancy (n = 22)	Nonmalignancy (n = 21)	P value
Age (yr), median (range)	76 (57–95)	65 (39–85)	0.2037a
Sex (female), n (%)	8 (36.4)	6 (28.6)	0.5860b
LN location, n (%)			0.4250b
Esophagus	13 (59.1)	15 (71.4)
Stomach	2 (9.1)	1 (4.8)
Liver	1 (4.5)	-
Pancreas	5 (22.7)	5 (23.8)
Kidney	1 (4.5)	-
LN diameter, median (range)	20.0 (4.0–50.0)	15.5 (7.0–21.6)	0.2662a
EUS-LN characteristics, n (%)
Irregular shape	11 (50.0)	10 (47.6)	0.8760b
Undefined border	13 (59.1)	8 (38.1)	0.2730b
Anechoic density	7 (31.8)	3 (14.3)	0.1740b
Giovannini elastic score, n (%)			0.7970b
Green (score 1 to 2)	1 (4.5)	2 (9.5)
Cyan (score 3)	6 (27.3)	6 (28.6)
Dark blue (score 4 to 5)	15 (68.2)	13 (61.9)
Strain ratio, median (range)	30.0 (3.0–120.0)	40.0 (5.0–269.0)	0.7182a
Histopathology, n (%)			< 0.001b
Acute lymphadenitis	-	10 (47.6)
Chronic lymphadenitis	-	11 (52.4)
Lymphoma	2 (9.1)	-
Metastasis	20 (90.9)	-

^aMann-Whitney U test.

^bPearson Chi-Quadrat Test.

EUS: Endoscopic ultrasound; LN: Lymph node.