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Table 1 Patients characteristics

From: Salvage robotic SBRT for local prostate cancer recurrence after radiotherapy: preliminary results of the Oscar Lambret Center

Median age at relapse (range) 70 (58-82)
Initial disease
 T-Stage T1: 7 (30.4%) T2: 8 (34.8%) T3: 7 (30.4%) NA: 1 (4.3%)
 Median PSA 10.38 ng/mL (2.34–57)
 Gleason 5: 1 (4.3%). 6: 5 (21.7%). 7: 13 (56.5%). 9 :1 (4.3%) NA: 3 (13%)
Prior RT modality
 External beam radiotherapy 19 (83%)
 Brachytherapy 4 (17%)
 Median dose of EBRT (Gy) (range) 75.6 (70–75.6)
 Residual treatment urinary or rectal toxicities Yes : 11 (Grade 1 : 7. Grade 2 : 4) No = 12
 Median interval from prior RT to salvage (range) 65 months (28 to 150)
Relapse
 Biopsy at relapse Yes: 19 (83%). No: 4 (17%)
 Unilateral positive biopsies 9 (47%)
 Bilateral positive biopies 10 (53%)
 Number of positive biopsies : median (range) 4 (1–13)
MRI Yes: 23 (100%). No 0 (0%)
 Involvment on MRI Unilateral: 12 (52.2%) Bilateral: 10 (43%) None: 1 (4%)
 Extracapsular invasion on MRI 11 (47%)
Choline PET scan Yes: 21 (91.3%) No: 2 (8.7%)
Androgen deprivation therapy Yes: 14 (61%) No: 9 (39.1%)