Ultrasomics in liver cancer: Developing a radiomics model for differentiating intrahepatic cholangiocarcinoma from hepatocellular carcinoma using contrast-enhanced ultrasound

Table 1 Basic characteristics of patients and lesions

Characteristics	HCC, n = 140	ICC, n = 140	P value
Age in yr	53.39 + 11.85	57.46 + 11.39	0.58
	26-79	33-86
Sex			0.311
Male	126	120
Female	14	20
HBV (+)	126	106	0.562
Lesion size in cm	66.37 + 27.38	69.04 + 32.68	0.271
AFP in μg/L			0.001
> 20	91	18
< 20	49	122
CA19-9 in U/mL			0.001
> 34	15	83
< 34	125	57

AFP: Alpha-fetoprotein; CA19-9: Carbohydrate antigen 19-9; HBV: Hepatitis B virus; HCC: Hepatocellular carcinoma; ICC: Intrahepatic cholangiocarcinoma.