P1225: SECONDARY PRIMARY MALIGNANCIES (SPM) AFTER HIGH-DOSE CHEMOTHERAPY (HDT) WITH AUTOLOGOUS STEM CELL TRANSPLANT (ASCT) FOR LYMPHOMA: A DANISH NATIONWIDE COHORT STUDY. (23rd June 2022) - Trab, T.; Baech, J.; Hjort Jakobsen, L.; Husby, S.; Tang Severinsen, M.; Eloranta, S.; Gørløv, J. S.; Jørgensen, J. M.; Gudbrandsdottir, S.; Stauffer Larsen, T.; Brown, P.; Smedby, K. E.; et al.