<unk>  is a rare B-cell neoplasm.<unk>  usually only involves the lymph nodes. Sometimes it can also be found in the bone marrow. A very small number of people with<unk>  will also have hepatitis C infection (HCV). On microscopic histopathological analysis, centrocytes, centroblasts, plasma cells, and immunoblasts are characteristic findings of<unk> . The incidence of<unk>  increases with age; the median age at diagnosis is 60 years. Females are more commonly affected with<unk>  than males.<unk>  is often slow growing (indolent). However, it can transform into a more aggressive large cell lymphoma.<unk> s behave slightly more aggressively than MALT lymphomas. Symptoms of the<unk>  include fever, weight loss, night sweats, and painless swelling in the neck, axilla, groin, thorax, and abdomen. Common physical examination findings of<unk>  include fever, peripheral lymphadenopathy, and central lymphadenopathy. Lymph node or bone marrow biopsy is diagnostic of<unk> . The predominant therapy for<unk>  is chemotherapy. Adjunctive radiotherapy, stem cell transplant, and biological therapy may be required. The optimal therapy for<unk>  depends on the clinical presentation.
Nodal marginal zone lymphoma
Splenic marginal zone lymphoma
Primary mediastinal large B-cell lymphoma
Follicular lymphoma
Thymic carcinoma
AIDS-related lymphoma
Diffuse large B cell lymphoma
Peripheral T cell lymphoma