Bendamustine-rituximab is a standard chemotherapy regimen for treatment of many indolent B-cell lymphomas, but most patients experience a recurrence of the lymphoma. Vincristine sulfate has been a traditional component of chemotherapy regimens in non-Hodgkin lymphoma and it is possible that adding it to the bendamustine-rituximab regimen might provide a better quality of remissions or longer duration of remissions with acceptable toxicity.