Summary of chromosomal imbalances detected by CGH in 31 patients with large B-cell lymphomas of the GI tract. Lines on the left indicate loss of chromosomal material, lines on the right refer to gains of chromosomal material. Squares represent high-level DNA amplifications. Gray lines indicate cases, in which the ratio profiles showed a clear shift toward underrepresentation or overrepresentation; however, the diagnostic thresholds were not reached. In these patients aberrations were confirmed by interphase cytogenetic analysis. The numbers on top of each line refer to the patient analyzed.