Paraneoplastic syndrome manifesting as chronic cerebellar ataxia in a child with Hodgkin disease.

An 8-year-old boy had nausea and vomiting associated with nystagmus, ataxia, and dysarthria of acute onset. Three years later he had a mass in the anterior mediastinum as a result of Hodgkin disease of mixed cellularity. This association of paraneoplastic cerebellar degeneration with Hodgkin disease has been described in adults.