The Influence of Serum Prostate-Specific Antigen on the Accuracy of Magnetic Resonance Imaging Targeted Biopsy versus Saturation Biopsy in Patients with Previous Negative Biopsy

Table 2

Comparison of biopsy results between the MRI group and control group.

	MRI group (TB plus SB)	Control group (SB only)	value
Total number of cores, median (IQR)	20 (4)	18 (3.5)	0.017
Number of cores with any cancer, mean ± SD			<0.001
Gleason score, number (%)			<0.001
≦3 + 3	6 (9.2%)	8 (6.7%)
3 + 4	9 (13.8%)	8 (6.7%)
4 + 3	10 (15.4%)	6 (5%)
≧4 + 4	5 (7.7%)	3 (2.5%)
Maximum cancer core length, mm, mean ± SD	2.6 ± 3.9 (TB)	0.8 ± 2.3	<0.001
Cancer detection, number (%)			<0.001
No cancer	35 (53.8%)	95 (79.2%)
Clinically insignificant cancer	2 (3.1%)	5 (4.1%)
Clinically significant cancer	28 (43.1%)	20 (16.7%)

SB: saturation biopsy; TB: target biopsy.