primitive neuroectodermal tumor

(PNET) a heterogeneous group of neoplasms thought to derive from undifferentiated neuroglial cells of the neural crest. Some occur in the brain and some (the peripheral neuroectodermal tumors) elsewhere, such as on a limb, the pelvis, or the chest wall. The classification also includes the neuroepithelial tumors of childhood.

Medical dictionary. 2011.

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  • Primitive neuroectodermal tumor — Classification and external resources ICD O: M9473/3 DiseasesDB 31470 …   Wikipedia

  • primitive neuroectodermal tumor — PNET. 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… …   English dictionary of cancer terms

  • central nervous system primitive neuroectodermal tumor — CNS PNET …   English dictionary of cancer terms

  • peripheral primitive neuroectodermal tumor — A type of cancer that forms in bone or soft tissue. Also called pPNET and Ewing sarcoma …   English dictionary of cancer terms

  • Neuroectodermal tumor — Classification and external resources MeSH D018358 A neuroectodermal tumor is a tumor of the central or peripheral nervous system. See also Neuroendocrin …   Wikipedia

  • Primitive neuroectodermal tumors — A type of brain tumor believed to originate in neural crest cells. Diagnosis is by biopsy. Treatment is by radiation and/or chemotherapy. Abbreviated PNET. See also Ewing’s sarcoma …   Medical dictionary

  • peripheral neuroectodermal tumor — (PNET) a primitive neuroectodermal tumor occurring outside of the central nervous system, such as on a limb, the pelvis, or the chest wall; seen most often in adolescents and young adults, frequently with widespread metastases …   Medical dictionary

  • tumor — 1. Any swelling or tumefaction. 2. SYN: neoplasm. 3. One of the four signs of inflammation (t., calor, dolor, rubor) enunciated by Celsus. [L. t., a swelling] acinar cell t. a …   Medical dictionary

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  • Desmoplastic small round cell tumor — DiseaseDisorder infobox Name = Desmoplastic small round cell tumor ICD10 = ICD9 = ICDO = 8806/3 Desmoplastic small round cell tumor is classified as a soft tissue sarcoma. It is an aggressive and rare tumor that primarily occurs as multiple… …   Wikipedia

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