Schematic representation of the chromosomal imbalances previously reported in classic CGH studies. Gains are shown in light gray and losses in dark gray. The centromere is represented by an arrowhead. MB positions and chromosome bands were determined with the UCSC genome browser (April 2003 freeze). When consecutive areas of the same case were less then 5 BAC clones apart and these clones had a mean similar to the mean of the consecutive areas, they were combined in 1 consecutive area. The most overlapping aberrations were loss of 1p, 11q, 13q, plus gain of 3q and 8q.