Abstract
Diffuse large B‐cell lymphoma (DLBCL), the most common sub‐type of non‐Hodgkin's lymphomas (NHL), is a genetically and clinically heterogeneous disease. MicroRNAs potentially play an important role in DLBCL pathogenesis and in the future may serve as useful biomarkers prognostic biomarkers. This chapter will present the current state of knowledge of microRNAs in DLBCL.