Surveillance and diagnosis of hepatocellular carcinoma: A systematic review

Table 4 Findings for HCC diagnosis

Vascular phase (CT/MRI)	Feature	Comments
Late arterial phase	Arterial phase hyperenhancement also known as "wash-in"	The lesion must be hypervascular with an enhancing part higher in attenuation or intensity than the liver, depicting a nonrim-like enhancement unequivocally greater in whole or in part of the lesion than the surrounding liver parenchyma
Portal phase or late venous phase	Washout	The lesion will present lower contrast uptake than the surrounding parenchyma
	"Capsule appearance"	A ring of peripheral uptake in the lesion

CT: Computed tomography; MRI: Magnetic resonance imaging.