Liver Imaging and Data System (LI-RADS) Version 2018 and Other Imaging Features in Intrahepatic Cholangiocarcinoma in Chinese Adults with vs. without Chronic Hepatitis B Viral Infection

Table 1

Other MR imaging features and their definitions.

Parameters	Definition
Lobe	Left (tumor entirely contained within left lobe)
	Right (tumor entirely contained within right lobe)
	Both (tumor extending into both lobes)
Location	Subcapsular (no visible parenchyma between mass and liver surface)
	Not subcapsular (visible parenchyma between mass and liver surface)
Shape	Round (circular or oval without lobulation or irregularity)
	Lobulated/irregular (lobulated and/or irregular margin)
Liver surface retraction	Liver border retraction peripheral to tumor
Hepatic lobe atrophy	Unequivocal decrease in lobar volume with crowding of the bile ducts and hepatic vasculature
Satellite nodules	Presence of discrete parenchymal nodules within 1 cm of primary tumor margin
Lymph node metastases	Considered positive when the short axis of a porta hepatis lymph node was greater than 10 mm or when a node showed central necrosis on MRI