Is Nystagmus a common side effect of neuroblastoma?

Answer 1

Not a common side effect, no, but there is a known association in some cases.

Opsoclonus "dancing eyes" nystagmus is present in only a few percent of children with neuroblastoma.

And taking this the other way round, there are many causes of infantile nystagmus that do not imply neuroblastoma.

Best wishes if this is question arisng from a particular case.