<qa>  What is the name of the treatment that is more effective in treating aggressive non-HodgRATIONALE: Drugs used in chemotherapy use different ways to stop cancer cells from dividing so they stop growing or die. Combining more than one drug and giving the drugs in different ways may kill more cancer cells. Radiation therapy uses high-energy x-rays to damage cancer cells. It is not yet known which combination chemotherapy regimen followed by radiation therapy is more effective in treating aggressive non-Hodgkins lymphoma. 