Assessment of metastatic liver disease in patients with primary extrahepatic tumors by contrast-enhanced sonography versus CT and MRI

Table 1 Demographic data of the study population

Parameter	Mean	Range
Age (yr)	59  ± 11	22 - 82
Weight (kg)	76  ± 13	45 - 115
Height (cm)	170  ± 8.9	152 - 192
Sex			51.2 % male, 48.8 % female
Race			99.2 % white, 0.08 % Asian

Table 2 Nature of primary tumor

Parameter	Mean	Range
Primary tumor	n	%
Colorectal tumor	44	35.2
Breast tumor	27	21.6
Pancreas tumor	17	13.6
Bronchial tumor	7	5.6
Gastric tumor	6	4.8
Renal tumor	3	2.4
Endocrine gastrointestinal tumor	2	1.6
Melanoma	2	1.6
Others	23	18.4
In 6 patients, several primary tumors were present

Table 3 Patients with correct diagnosis (existence of metastatic disease) with unenhanced sonography and contrast-enhanced sonography (CEUS)

		CEUS
		Correct diagnosis
		Yes	No
Unenhanced	Yes	82	1	83
sonography	No	11	8	19
correct diagnosis
		93	9	102

Table 4 Patients with correct diagnosis (existence of metastatic disease) with contrast-enhanced sonography (CEUS) and triple-phase spiral CT

		CEUS
		Correct diagnosis
		Yes	No
CT	Yes	83	8	91
correct diagnosis	No	10	1	11
		93	9	102