NCIt definition : A malignant neoplasm that originates in the neuroectoderm. The neuroectoderm constitutes
the portion of the ectoderm of the early embryo that gives rise to the central and
peripheral nervous systems and includes some glial cell precursors.;
Alternative definition : NCI-GLOSS: One of a group of cancers that develop from the same type of early cells,
and share certain biochemical and genetic features. Some PNETs develop in the brain
and central nervous system (CNS-PNET), and others develop in sites outside of the
brain such as the limbs, pelvis, and chest wall (peripheral PNET).;
Neoplastic status : Malignant;
ICD-O code : 9503/3; 9473/3;
Codes from synonyms : CDR0000383920; CDR0000045952; CDR0000383924;