obsolete_B-cell acute lymphoblastic leukemia true true precursor B lymphoblastic leukemia/lymphoma Replaced by Mondo term MONDO_0004947, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0004947 http://purl.obolibrary.org/obo/MONDO_0004947 EFO:0000094 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 B acute lymphoblastic leukemia. When it involves nodal or extranodal sites, it is called B lymphoblastic lymphoma. (WHO, 2001) B-cell acute lymphoblastic leukemia precursor B lymphoblastic lymphoma/leukemia SCTID:277571004 NCIT:C8936 B lymphoblastic leukemia/lymphoma DOID:7061 3.88.0 precursor B-lymphoblastic lymphoma/leukemia