(A) G-banded karyotype of the bone marrow cells. The karyotype was initially decided as 46,XY,t(7;11;9)(q22;q13;q34),t(9;22)(q34;q11.2). Arrows indicate rearranged chromosomes. (B) Spectral karyotyping of the metaphase of the patient’s leukemic cells spread after spectrum-based classification. Chromosomes were assigned a pseudocolor according to the measured spectrum. Four derivative chromosomes, der(9)t(9;11)(q34;q13), der(9)t(9;22)(q34;q11), der(11)t(7;11)(q22;q13) and der(22)t(9;22)(q34;q11) and the truncated chromosome 7 were indicated by arrows. The grayscale images are reverse DAPI; the colored images, SKY. (C) Normal SKY image.