title: [Acute Philadelphia-positive leukemia as an apparently "ex novo" hematologic phenomenon. Report of 2 cases].
mesh_terms: D000293:Adolescent; D000328:Adult; D002904:Chromosomes, Human, 21-22 and Y; D005260:Female; D006801:Humans; D007945:Leukemia, Lymphoid / Q000235:genetics*; D015470:Leukemia, Myeloid, Acute / Q000235:genetics*; D009030:Mosaicism
vernacular_title: Leucemias agudas Filadelfia-positivas como fenómeno hematológico aparentemente "ex novo". Comunicación de dos casos.