<unk> s are disorders of the immune system that are characterized by the abnormal proliferation of the primary cells of the immune system, which includes B cells, T cells and natural killer (NK) cells, or by the excessive production of immunoglobulins (also known as antibodies).
Immunoproliferative disorder
Myeloproliferative neoplasm
Secondary malignant neoplasm
Vitamin deficiency
Autoimmune disease
Immunosuppression
Immune disorder
Lymphoproliferative disorders