TABLE 2.

Frequent Chromosomal Aberrations by Array CGH

Chromosomal Aberration	Low-Grade IPMNs (n = 7)	Moderate Grade IPMNs (n = 5)	High Grade Dysplasia or Invasion (n = 8)	% in Non-Low Grade (total) (n = 13)
Loss of 2	0	1	4	38.5
Loss of 4q	0	1	5	46.2
Loss of 5q	0	2	5	53.8
Loss of 6q	0	4	6	76.9
Gain of 7	0	4	4	61.5
Loss of 8p	0	2	4	46.2
Loss of 10q	0	3	5	61.5
Loss of 11q	0	3	5	61.5
Loss of 13q	0	3	4	53.8
Loss of 15q	0	2	4	46.2
Loss of 18q	0	2	5	53.8
Gain of 19q	0	0	4	30.8
Loss of 22q	0	4	3	53.8

Overview of frequent chromosomal aberrations (prevalence of ≥50% within each group).