Table 2.

EUS elastography versus B mode EUS image for diagnosis of lymph node metastasis

	Sensitivity	Specificity	Accuracy
EUS elastography (%)	91.2 (22/24)	94.5 (86/91)	93.9 (108/115)
B mode EUS (%)	62.5 (15/24)	73.5 (67/91)	71.3 (82/115)
P value EUS elastography vs. B mode EUS	0.04	<0.01	<0.01

The results of the histological examination of the surgical specimens revealed benign tissue in 91 lymph nodes, and malignant tissue in 24 lymph nodes. The images of EUS elastography were interpreted as benign in 86 samples, and malignant in 22 samples. The sensitivity and specificity of EUS elastography were significantly better than those of B-mode imaging