noun, plural neu·ro·blas·to·mas, neu·ro·blas·to·ma·ta [noo r-oh-bla-stoh-muh-tuh, nyoo r-] /ˌnʊər oʊ blæˈstoʊ mə tə, ˌnyʊər-/. Pathology.

  1. a malignant tumor of immature nerve cells that usually starts in the autonomic nervous system or adrenal gland and spreads quickly, most often affecting young children.

noun plural -mata (-matə) or -mas

  1. pathol a malignant tumour that derives from neuroblasts, occurring mainly in the adrenal gland


  1. A malignant tumor composed of neuroblasts, originating in the autonomic nervous system or the adrenal medulla and occurring most commonly in infants and young children.
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