Other variables entered into the analysis include: stage at initial diagnosis, B symptoms at initial diagnosis, initial treatment with radiotherapy alone, duration of remission (induction failure v ≤12 mo v >12 mo), stage at relapse, age at relapse, B symptoms at relapse, number of extra nodal disease sites at relapse, prior radiotherapy, relapse in site of prior radiotherapy and response to cytoreductive therapy (CR/MD v PR v NR). NS: P > .20.