| Health / Medical Topics |
B Lymphoblastic Leukemia/Lymphoma
A neoplasm of lymphoblasts committed to the B-cell lineage, typically composed of small to medium-sized blast cells. When the neoplasm involves predominantly the bone marrow and the peripheral blood, it is called precursor B lymphoblastic leukemia (B-cell acute lymphoblastic leukemia). When it involves nodal or extranodal sites, it is called B lymphoblastic lymphoma. (NCI Thesaurus/WHO)
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