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Related Experiment Video

Updated: Jun 17, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
09:53

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

Invasive sellar extraventricular neurocytoma: illustrative case.

Olivia E Gilbert1, Jacob A Dillard1, Deveney Franklin1

  • 1Department of Neurosurgery, University of North Carolina, Chapel Hill.

Journal of Neurosurgery. Case Lessons
|June 15, 2026
PubMed
Summary

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Sellar neurocytomas are rare sellar masses that mimic other tumors. Maximal safe resection and optic decompression are key, with adjuvant radiotherapy and surveillance for residual disease.

Area of Science:

  • Neurosurgery
  • Neuropathology
  • Endocrinology

Background:

  • Sellar extraventricular neurocytomas are rare tumors mimicking pituitary adenomas and craniopharyngiomas.
  • Clinical and imaging features often hinder preoperative diagnosis.
  • Limited case reports impede defining optimal management and outcomes.

Purpose of the Study:

  • To present a case of sellar neurocytoma and review literature for optimal management strategies.
  • To highlight diagnostic challenges and treatment considerations for this rare entity.

Main Methods:

  • Case presentation of a 40-year-old male with visual deficits and hypopituitarism.
  • Endoscopic endonasal resection for maximal safe cytoreduction and optic decompression.
  • Histopathological and immunohistochemical analysis (synaptophysin, chromogranin, Ki-67) and literature review.
Keywords:
bitemporal hemianopsiaextraventricularpituitary masssellar neurocytomastereotactic radiosurgerytranssphenoidal approach

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Last Updated: Jun 17, 2026

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Main Results:

  • Histopathology confirmed neurocytoma with neuronal differentiation and low proliferative activity (Ki-67).
  • Postoperative improvement in vision, headaches, and thyroid function was observed.
  • Literature review indicated frequent cavernous sinus invasion and recurrence risk after subtotal resection.

Conclusions:

  • Sellar neurocytoma is a critical differential diagnosis for invasive sellar masses.
  • Definitive diagnosis requires immunohistochemistry showing neuronal differentiation with low proliferation.
  • Prioritize maximal safe resection, optic decompression, and consider adjuvant radiotherapy and surveillance for residual disease.