The Palliative Benefit of Involved-site Radiotherapy for Patients With Advanced-stage Diffuse Large B-cell Lymphoma

"6 cycles modern CHOP chemotherapy followed consolidation involved-site radiotherapy (ISRT).~Involved-site radiotherapy (ISRT) is based on defining the site of gross disease before chemotherapy, the GTV and using a CT-based volume with an expansion to form a CTV in the cranio-caudal direction.~The general dose had been guided that 30-36Gy in 15\~18 fractions of 2 Gy 5 days per week was managed for patients with complete response (CR) after chemotherapy and 40-50Gy in 20\~25 fractions of 2 Gy 5 days per week for partial response (PR)."

"6 cycles modern CHOP chemotherapy followed consolidation involved-field radiotherapy (IFRT).~Radiotherapy field of IFRT defined by CALGB is encompassed the prechemotherapy gross tumor.~The general dose had been guided that 30-36Gy in 15\~18 fractions of 2 Gy 5 days per week was managed for patients with complete response (CR) after chemotherapy and 40-50Gy in 20\~25 fractions of 2 Gy 5 days per week for partial response (PR)."

Patients in both arms will be given cyclophosphamide chemotherapy

Patients in both arms will be given doxorubicin chemotherapy

Patients in both arms will be given vincristine chemotherapy

Patients in both arms will be given prednisone chemotherapy