Differentiation of atypical hepatic hemangioma from liver metastases: Diagnostic performance of a novel type of color contrast enhanced ultrasound

Table 1 Comparison of routine contrast enhanced ultrasound features between atypical hemangioma and liver metastasis

CEUS	Staff			Resident
	H (n = 20)	M (n = 22)	P value	H (n = 20)	M (n = 22)	P value
Peripheral nodular	10 (50)	2 (9.1)	0.003	8 (40)	3 (13.6)	0.052
Peripheral rim-like	6 (30)	5 (22.7)	0.592	8 (40)	4 (18.2)	0.118
Homogenous hyper	2 (10)	6 (27.3)	0.135	3 (15)	9 (40.9)	0.063
Heterogeneous hyper	2 (10)	9 (40.9)	0.023	1 (5)	6 (27.3)	0.096
Feeding artery	6 (30)	10 (45.5)	0.303	5 (25)	8 (36.4)	0.426

Numbers in parentheses are percentages. The difference between peripheral nodular enhancement and heterogeneous enhancement of contrast enhanced ultrasound patterns were observed (P = 0.003, P = 0.023) in staff group. CEUS: Contrast enhanced ultrasound; H: Hemangioma; M: Metastasis.