Table 1. Patient Characteristics.

Case	Origin	TNM stage	Diagnosis	Chemotherapy (term)	Ultrasonography	CT	MRI	DWI-MRI	PET-CT
Arakawa et al.	Rectum	Not mentioned	CRM	XELOX (8 cycles)	Hyperechoic	Hypodense lesion with heterogeneous enhancement	EOB: defect on the hepatocellular phase	None	None
Uchino et al.	Rectum	T4N1M0	CRM	mFOLFOX6 (6 cycles)	N.D.	Hypodense lesion	T1: low intensity, T2: high intensity, EOB: defect on the hepatocellular phase	N.D.	None
Alexandrino et al.	Sigmoid colon, rectum	T3N1M0	CRM	XELOX (12 cycles)	hypoechoic	Hypodense lesion	None	None	None
Present case	Liver metastasis	T3N1M1	CRM	mFOLFOX6 (12 cycles)	Slightly hyperechoic	Hypodense lesion	T1: low intensity, T2: high intensity, EOB: defect on the hepatocellular phase	N.D.	N.D.

Abbreviations: CRM,colorectal metastasis; DWI, diffusion-weighted image; EOB, gadoxetic acid-enhanced magnetic resonance imaging; N.D., not detected.