A ganglioneuroblastoma arising from the mediastinum. The disease is mediastinum ganglioneuroblastoma (MONDO_0001096). Also known as: ganglioneuroblastoma (disease) of mediastinum, ganglioneuroblastoma of mediastinum, ganglioneuroblastoma of the mediastinum, mediastinal ganglioneuroblastoma, mediastinum ganglioneuroblastoma (disease).