P1230: PET/CT IMAGING FOR RESPONSE ASSESSMENT AND TREATMENT GUIDANCE AFTER RITUXIMAB-DOSE-ADJUSTED-EPOCH(R-DA-EPOCH) IN PRIMARY MEDIASTINAL LARGE B-CELL LYMPHOMA (PMLBCL):THE GREEK EXPERIENCE ON 107 PATIENTS. (23rd June 2022) - Vassilakopoulos, T.; Piperidou, A.; Mellios, Z.; Verigou, E.; Kalpadakis, C.; Katodritou, E.; Papageorgiou, S.; Chatzidimitriou, C.; Giatra, C.; Leonidopoulou, T.; Xanthopoulos, V.; Karakatsanis, S.; et al.