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The use of all trans-retinoic acid (ATRA) is the basis of treatment of acute promyelocytic leukemia (APL) and represents the paradigm of differentiation therapy. In general, ATRA is well-tolerated(More)
Extramedullary involvement occurs infrequently in acute promyelocytic leukemia and is said to be more common after treatment with all-trans retinoic acid. We describe a 9-year-old girl who had an(More)