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Children with neuroblastoma whose opsomyoclonus recurs or persists after initial surgery should be carefully evaluated for tumor. If no tumor is detectable, therapy with ACTH should be considered in patients whose symptomatology is severe enough to compromise normal development.

A growing literature supports the concept that some cases of neuroblastoma are hereditary. To this we add the first known case, to our knowledge, of neuroblastoma in a parent and child. Various factors, such as the remarkable tendency for this tumor to regress spontaneously, as well as its frequent fatal outcome, have reduced the number of observed familial cases. It is important that siblings and progeny of patients with neuroblastoma be examined to detect possible subclinical neuroblastoma.