Figure 1.

Ideogram representing 34 relapsing Wilms’ tumors taken at diagnosis or relapse. Solid gray lines on the right represent gain at diagnosis and hashed lines represent gain at relapse. Solid black lines on the left represent loss at diagnosis and hashed lines represent loss at relapse. Thick solid or hashed lines represent higher levels of gain (fluorescence ratio >1.5). Case numbers are shown at the top of each vertical line.