At a median of 60 months of follow-up , there had been 8 instances of disease progression in the radiotherapy group , and 8 patients had died ( 3 with disease progression , 1 of whom died from Hodgkin 's lymphoma ) ; there had been 20 instances of disease progression in the group with no further therapy , and 4 patients had died ( 2 with disease progression and none from Hodgkin 's lymphoma ) .