Chromosome analysis of a human neuroblastoma.

Samplings of tumor cells from a patient with Stage IV neuroblastoma were analyzed for chromosome constitution. Chromosome preparations of the tumor cells from a bone marrow sample were compared to preparations of a solid metastatic tumor after growth in the nude mouse host or followed by culture. Six separate chromosome studies were done. The tumor karyotype demonstrated an overall stability, maintaining the consistent abnormalities of a 1p-, +17, and -22. Chromosomes 5 and 9 were also involved in structural abnormalities in sublines of the tumor cells. Double minutes were seen in all preparations.