Marginal zone lymphoma (MZL) originates from the marginal zone of lymphatic follicles and can occur in the spleen, lymph nodes and mucosal lymphoid tissues, and the incidence increases with age. The clinicopathological features of each subtype of MZL are heterogeneous, and their clinical manifestations, biology, etiology, and treatment are all quite heterogeneous, and there is still significant uncertainty about the optimal treatment pathway. This prospective, multicenter, cohort study aims to describe the clinical features, diagnosis and treatment status, disease course and primary outcomes of different subtypes of MZL, and to observe the therapeutic efficacy and safety of different treatment modalities.
