Angiomatoid neuroblastoma with cytoplasmic glycogen: a case report and histogenetic considerations.

A case of angiomatoid neuroblastoma with intracytoplasmic glycogen demonstrable by both light and electron microscopy is presented. A review of the histogenesis of the adrenal medulla indicates that glycogen-containing tumors of the adrenal medulla originate from a more primitive cell than their non-glycogen-containing counterparts.