one hundred sixty-six patients with clinical stages ia , ii2a hodgkin 's disease were treated between april 1972 and december 1976 with three courses of multiagent chemotherapy ( methylchlorethamine , vincristine , procarbazine , prednisone ) followed by mantle irradiation -- excluding mediastinum for those with initial upper cervical presentation and absence of mediastinal involvement -- or inverted y radiotherapy .
C0019829
hodgkin 's disease
C0033223
procarbazine