Table 5: Characteristics of 23 cases of HCC with US negative/AFP positive

Patient no.		Age (years)		Sex (M/F)		Cirrhosis (Y/N)		Underlying liver diseases		AFP level (IU/mL)		Interval between US and AFP (days)
1		62		F		Y		CHC		450.5		0
2		64		M		Y		CHB		56.8		0
3		82		M		Y		Alcohol		131.5		0
4		71		F		N		CHB		78.4		18
5		58		F		Y		CHB		2320.0		9
6		69		M		Y		CHB		282.6		16
7		69		M		Y		Cryptogenic		47.8		0
8		36		M		Y		CHB		226.0		0
9		75		F		Y		CHB		53.0		66
10		82		M		Y		CHB		235.1		17
11		57		F		Y		CHC		74.7		2
12		61		M		Y		CHC		33.5		104
13		74		F		Y		CHC		23.8		0
14		58		M		Y		CHC		21.4		6
15		58		F		Y		CHB/CHC		73.0		171
16*		62		F		Y		CHC		137.1		14
17		64		M		Y		CHB		40.3		118
18		51		M		Y		CHC		849.4		2
19		57		F		Y		CHC		67.5		17
20		38		M		Y		CHC/Alcohol		55.4		135
21**		57		M		Y		CHB		26.3		34
22		69		M		Y		CHB		420.0		30
23		57		F		Y		CHB		24.9		25

*HCC was diagnosed 17 months after the index diagnostic study; **HCC was diagnosed 23 months after the index diagnostic study; CHB: Chronic hepatitis B; CHC: Chronic hepatitis C