Figure 4

Fluorescent in situ hybridization for 17q in nodular ganglioneuroblastoma. Case showing 17q gain (red probe) compared with a centromere probe for chromosome 17 (green) in the neuroblastomatous component (a) and the ganglioneuromatous component (b). In the latter, the gain is restricted to the larger ganglion cells (arrows), while adjacent Schwann cells show a normal 17q copy number.