Contrast-Enhanced Ultrasound Guided Biopsy of Undetermined Abdominal Lesions: A Multidisciplinary Decision-Making Approach

Table 1

Baseline characteristics of patients in two groups.

Characteristic	CEUS group; ()	US group; ()
Age (year)
Mean ± SD
Range	17–83	16–80
Male/female	37/23	43/32
Underlying diseases
Previous tumor history	7	8
None	53	67
CEA (ng/mL)
≤5, (%)	45 (75.0%)	34 (45.3%)
>5, (%)	15 (25%)	41 (54.7%)
CA 19-9 (μ/mL)
≤4.9, (%)	25 (41.6%)	51 (68.0%)
>4.9, (%)	35 (58.4%)	24 (32.0%)
Initial clinical diagnose
Malignant, (%)	56 (93.3%)	70 (93.3%)
Benign, (%)	4 (6.7%)	5 (6.7%)

CEA: carcinoembryonic antigen; CA19-9: carbohydrate antigen 19-9.