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Table 1 Patients characteristics

From: Magnetic resonance guided SBRT reirradiation in locally recurrent prostate cancer: a multicentric retrospective analysis

Characteristics

Patients (n = 18)

Median age (at recurrence time)

77 years (range 60–86)

Gleason grade at diagnosis

 

1

2

3

4

5

4 (22.2%)

5 (27.8%)

3 (16.7%)

4 (22.2%)

2 (11.1%)

Prior Prostatectomy

 

Yes

No

9 (50%)

9 (50%)

EBRT EQD2 dose received

 

≥ 60 < 70

≥ 70

11 (61.1%)

7 (38.9%)

Time to relapse (years)

 

< 10

> 10

6 (33.3%)

12 (66.7%)

Type of relapse

 

Biochemical alone

Macroscopic alone

Both

0

3 (16.7%)

15 (83.3%)

Relapse site

 

Intraprostatic/Prostate bed

Extraprostatic

Both

15 (83.3%)

0

3 (16.7%)

Spacer positioning

 

Yes

No

2 (11.1%)

16 (88.9%)

Median PSA value pre-MRgSBRT (ng/ml)

1.38 (range 0.14–13.8)

Re-treatment BED (α/β of 1.5)

 

≤ 213.3 Gy

> 213.3 Gy

12 (66.7%)

6 (33.3%)

Concurrent ADT

 

 Yes

 No

10 (55.6%)

8 (44.4%)