[1] IRCCS Regina Elena Natl Canc Inst, Nucl Med Unit, I-00144 Rome, Italy
[2] IRCCS Regina Elena Natl Canc Inst, Sarcomas & Rare Tumors Dept Unit, I-00144 Rome, Italy
[3] IRCCS Regina Elena Natl Canc Inst, Dept Pathol, I-00144 Rome, Italy
[4] Sapienza Univ Rome, Dept Radiol Oncol & Pathol Sci, I-00161 Rome, Italy
[5] IRCCS Regina Elena Natl Canc Inst, Dept Radiat Oncol, I-00144 Rome, Italy
[6] IRCCS Regina Elena Natl Canc Inst, Oncol Orthopaed Unit, I-00144 Rome, Italy