Treatment Options for Indolent Stage I and Indolent, Contiguous Stage II B-Cell NHL

Treatment options for indolent stage I and indolent, contiguous stage II B-cell NHL include:

In a prospective randomized trial, 150 patients with stage I or stage II follicular lymphoma were randomly assigned to 30 Gy of involved-field radiation therapy alone or radiation therapy plus six cycles of R-CVP (rituximab, cyclophosphamide, vincristine, prednisolone). With a median follow-up of 9.6 years, the 10-year progression-free survival (PFS) rate favored combined-modality therapy, at 59% (95% confidence interval [CI], 46%–74%) versus 41% for radiation therapy alone (95% CI, 30%–57%) (P = .033). There was no difference in overall survival (OS) (87% and 95%; P = .40).[1][Level of evidence B1]

The National Lymphocare Study identified 471 patients with stage I follicular lymphoma. Of those patients, 206 were rigorously staged with a bone marrow aspirate and biopsy, and computed tomography (CT) scans or positron emission tomography (PET)-CT scans.[2] Nonrandomized treatments included radiation therapy (27%), rituximab-chemotherapy (R-chemotherapy) (28%), watchful waiting (17%), R-chemotherapy plus radiation therapy (13%), and rituximab alone (12%), although more than one-third of the patients started with watchful waiting. With a median follow-up of 57 months, PFS favored R-chemotherapy or R-chemotherapy plus radiation therapy, but OS was nearly identical, all over 90%.[2][Level of evidence C2] Clinical trials are required to answer the following questions:[3]