to descrive clinical characteristics of Marginal zone lymphoma patients who were diagnosed and treated in our Hospital.

It includes:

1. Description of treatment duration and causes of treatment discontinuation.
2. Description of adverse events / safety of the treatments
3. Assessment of patients' survival.
4. Description of the medical resource utilization, including number of emergency department visits, hospitalizations, use of hematopoietic growth factors and antibiotics, and blood product transfusions.
5. Patient clinical and biological characteristics and disease biological profile at baseline of Marginal zone lymphoma cases