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Dysembryoplastic neuroepithelial tumours

C Daumas-Duport1

  • 1Department of Pathological Anatomy, Sainte-Anne Hospital, Paris, France.

Brain Pathology (Zurich, Switzerland)
|July 1, 1993
PubMed
Summary
This summary is machine-generated.

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Dysembryoplastic neuroepithelial tumours (DNTs) are benign brain lesions often presenting as epilepsy in children. A specific glioneuronal element is sufficient for diagnosis, and these tumors are typically stable over time.

Area of Science:

  • Neuro-oncology
  • Pediatric Neurology
  • Surgical Pathology

Background:

  • Dysembryoplastic neuroepithelial tumours (DNTs) are supratentorial cortical lesions.
  • They are often misdiagnosed as other glial tumors like astrocytomas or oligodendrogliomas.
  • DNTs are clinically associated with early-onset partial seizures without neurological deficits.

Purpose of the Study:

  • To clarify diagnostic criteria for DNTs based on the WHO classification.
  • To investigate the diagnostic sufficiency of a specific glioneuronal element.
  • To assess the stability and potential growth of DNTs.

Main Methods:

  • Histopathological analysis of DNT cases.
  • Review of imaging follow-up data for DNTs.
  • Evaluation of the glioneuronal element in tumor diagnosis.

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Main Results:

  • A specific glioneuronal element is sufficient for diagnosing DNTs.
  • The spectrum of DNTs includes a simple form characterized by this unique element.
  • Preoperative imaging indicated that DNTs are stable, though a high MIB-1 labeling index may be observed.

Conclusions:

  • The presence of a unique glioneuronal element is adequate for DNT diagnosis.
  • DNTs represent a spectrum from simple to complex forms.
  • DNTs are generally stable lesions, but cellular proliferation markers warrant attention.