Unusual CNS and orbital metastases of neuroblastoma.

Although neuroblastoma is a common childhood malignancy with frequent metastatic disease, involvement of the CNS and eye are unusual findings. Recently, we encountered two such cases. One of the patients had undergone bone marrow transplantation. The long term effects of this treatment regarding behavior of the tumor and subsequent metastatic pattern have yet to be determined. The second patient presented with apparent congenital neuroblastoma. Both of these tumors were extremely aggressive in nature, and could represent variations of the usual metastatic pattern of neuroblastoma.