SORIs of the main chromosomes involved in SMZL. Red lines represent losses; green lines, gains; red dots, rearrangements; and arrow, the Smallest Overlapping Region of Imbalance (SORI) 7q32.1-q32.2. The most frequent chromosomal regions affected by structural abnormalities were 7q (109 cases), 3q (42 cases), 14q (40 cases), 6q (37 cases), 1q (30 cases), and 8q (29 cases).