A Case of Ganglioneuroblastoma Presenting as Weakness of the Lower Extremities

Ganglioneuroblastoma is a rare tumor originating from the sympathetic chain. It is intermediate between the highly malignant neuroblastoma and the benign ganglioneuroma. The predilection sites of ganglioneur- oblastoma are the retroperitoneum and mediastinum but involvement of the structures around the spinal cord is infrequent. A 4 year-old girl who had progressive weakness in both lower extremities had a tiptoe gait for 2 months. A magnetic resonance imaging (MRI) study revealed a heterogeneous enhancing mass in the right mediastinum and paraspinal areas. A biopsy of the mass confirmed a ganglioneuroblastoma with many neuroblasts and nodules of ganglion cells. This is an unusual case of a child with spastic paraplegia caused by ganglioneuroblastoma of the thoracic cavity. (Korean J Hematol 2007;42:414-418.)