From: The optimal number of initial prostate biopsy cores in daily practice: a prospective study using the Nara Urological Research and Treatment Group nomogram
PSA (ng/mL)
Number of biopsies
Cancer
n = 936
%
n = 449
0–4
87
9.3
18
20.7
4–10
548
58.5
206
37.6
10–20
154
16.5
90
58.4
20–30
36
3.8
26
80.6
30–40
24
2.6
21
87.5
40–50
10
1.1
100.0
50–100
30
3.2
28
93.3
100<
47
5.0