Characterization of focal liver masses using acoustic radiation force impulse elastography

Table 1 Characteristics and acoustic radiation force impulse values of focal liver masses

Variables	Total masses (n = 47)	HCC (n = 24)	CCC (n = 7)	Metastases (n = 8)	Hemangioma (n = 5)	FNH (n = 3)
Histologic confirmation	34 (72.3)	15 (62.5)	7 (100)	8 (100)	1 (20.0)	3 (100)
Size, cm	5.0 (1.4-20.5)	4.9 (1.4-18.3)	9.4 (7.4-18.8)	8.0 (1.6-20.5)	1.9 (1.5-4.7)	2.7 (2.0-3.0)
Depth, cm	5.6 (2.7-7.8)	5.7 (2.7-7.8)	6.4 (4.8-7.2)	4.9 (3.5-7.6)	5.3 (4.5-6.5)	5.6 (2.8-7.8)
Right/left lobe	34 (72.3)/13 (27.7)	19 (79.2)/5 (20.8)	5 (71.4)/2 (28.6)	5 (62.5)/3 (37.5)	4 (80.0)/1 (20.0)	1 (33.3)/2 (66.7)
ARFI value, m/s
Masses	2.23 ± 0.98	2.48 ± 0.84	1.65 ± 1.43	2.35 ± 1.18	1.83 ± 0.62	0.97 ± 0.48
Surrounding parenchyma	1.83 ± 0.73	2.14 ± 0.59	1.07 ± 0.49	1.45 ± 0.51	1.10 ± 0.14	1.63 ± 0.40
P value	0.029	0.134	0.015	0.043	0.013	0.581

Data was expressed as median (range) or n (%). HCC: Hepatocellular carcinoma; CCC: Cholangiocellular carcinoma; FNH: Focal nodular hyperplasia; ARFI: Acoustic radiation force impulse.