Table 1 Patients’ characteristics

Gleason score

 6

8 (20.0%)

 7

12 (30.0%)

 8–10

20 (50.0%)

T stage (AJCC 8^th)

 T2

33 (82.5%)

 T3

5 (12.5%)

 T4

1 (2.5%)

 ^aTx

1 (2.5%)

Risk group

 Low

2 (5.0%)

 Intermediate

14 (35.0%)

 High

23 (57.5%)

 ^aUnknown

1 (2.5%)

Initial PSA

 < 10 ng/mL

16 (40.0%)

 10–19.9 ng/mL

13 (32.5%)

 ≥ 20 ng/mL

11 (27.5%)

Parameter

Volume (cc)

CTV/median (range, cc)

92.85 (48.08–164.94)

  ≤ 100.00

68.44 (48.08–94.5) (52.5%)

 > 100.00

121.37 (107.42–164.94) (47.5%)

Rectum/median (range, cc)

50.66 (34.59–75.29)

 ≤ 50.00

44.04 (34.59–49.89) (47.5%)

 > 50.00

56.19 (50.41–75.29) (52.5%)