Mantle cell lymphoma (MCL) is a subtype of Non-Hodgkin's Lymphoma (NHL) with varying clinical presentations, ranging from indolent disease to highly aggressive symptoms. MCL represents approximately 3-10% of non-Hodgkin lymphomas, and has increased in incidence over the past several decades. The majority of patients respond to initial therapy, but remission duration is typically short. This book discusses the clinical characteristics of mantle cell lymphoma, as well as its prevalence and examines several treatment options available.