This is multicenter, open label study to evaluate the safety and efficacy of bendamustine HCl in patients with indolent Non-hodgkin's lymphoma and relapsed after rituximab treatment. This injection will be given through i.v. infusion in >= 60 minutes on days 1 and 2 of every 21-day treatment cycle. Patients will be treated for up to 8 cycles unless progressive disease or unacceptable toxicity take place. Patients will be followed for up to 1 year before evaluating progression free survival (PFS) and overall survival (OS).
The purpose of this study is to determine whether bendamustine HCl for injection is safe and effective in the treatment of Rituximab refractory or relapsed B-cell indolent lymphoma.