Differentiation of focal liver lesions using three-dimensional ultrasonography: Retrospective and prospective studies

Table 1 Clinical characteristics of patients and focal liver lesions in retrospective and prospective studies (mean ± SD)

	Retrospective study (n = 163)				Prospective study (n = 119)
	HCC	Metastasis	Hemangioma	FNH	HCC	Metastasis	Hemangioma	FNH
No. of patients	98	35	24	6	70	28	16	5
No. of lesions	98	35	24	6	70	28	16	5
Age of patients (yr)	69.8 ± 6.5	64.8 ± 13.2	58.9 ± 11.2	54.2 ± 16.7	72.5 ± 7.3	69.2 ± 8.3	55.4 ± 14.1	52.8 ± 18.4
Liver cirrhosis
Child-Pugh class A	78	0	1	0	52	0	0	0
Child-Pugh class B	20	0	0	0	18	0	0	0
Lesion diameter (mm)	30.1 ± 24.3	28.9 ± 15.5	31.5 ± 18.0	38.4 ± 12.0	29.1 ± 20.4	30.7 ± 21.1	33.7 ± 16.7	37.4 ± 15.0
Final diagnosis
Surgery	11	15	2	0	6	12	0	0
Biopsy	29	20	0	1	19	16	0	1
Radiological imaging	58	0	22	5	45	0	16	4

HCC: Hepatocellular carcinoma; FNH: Focal nodular hyperplasia.