"Comparing Salvage Radiotherapy and Individualized PSMA PET/CT Targeted Treatment in With Relapsing Prostate Cancer"

"Group I - No uptake: treated with conventional SRT against the prostate bed. Group II -Uptake only in the prostate bed: will receive intensity modulated RT (IMRT) including Volumetric Modulated Arc Therapy (VMAT) for prostate bed with simultaneous-integrated boost (SIB) to the PET positive uptake in the prostate bed.~Group III - Uptake in the prostate bed and involvement of regional lymph nodes in the pelvis: will be treated as Group II plus VMAT for the pelvic lymph nodes with SIB to the PET positive lymph nodes or pelvic lymph nodes salvage lymph node dissection (SLND).~Group IV - Uptake in regional lymph nodes only: will be treated with VMAT for the pelvic lymph nodes with SIB to the PET positive lymph nodes or pelvic lymph nodes SLND.~Group V - Uptake in extra-pelvic lymph nodes or bone metastasis: systemic treatment instead of surgery or radiation. Local treatment with surgery or radiation is acceptable if curative intention."

Standard salvage radiotherapy