NCIt definition : A malignant lymphocytic neoplasm of B-cell or T-cell lineage involving primarily the
bone marrow and the peripheral blood. This category includes precursor or acute lymphoblastic
leukemias and chronic leukemias.;
Alternative definition : NCI-GLOSS: A type of cancer in which the bone marrow makes too many lymphocytes (white
blood cells).; CDISC: A progressive, proliferative disease of blood cells, originating from lymphoid
cells.;