Preferred Label : Acute Leukemia of Ambiguous Lineage;
NCIt synonyms : Acute Leukemia of Indeterminate Lineage; ALAL;
NCIt related terms : Acute Leukemia, ambiguous lineage (mixed or biphenotypic); Acute Leukemia of Ambiguous Lineage (ALAL);
NCIt definition : An acute leukemia in which the blasts lack sufficient evidence to classify as myeloid
or lymphoid or they have morphologic and/or immunophenotypic characteristics of both
myeloid and lymphoid cells. (WHO, 2001);
Alternative definition : NICHD: A rare subtype of acute leukemia in which the blasts lack sufficient evidence
to classify as myeloid or lymphoid, or they have morphologic and/or immunophenotypic
characteristics of both myeloid and lymphoid cells. These subtypes account for less
than 4% of cases of acute leukemia.;