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Surgical Treatment of an Endolymphatic Sac Tumor
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Cerebellar liponeurocytoma.

Todd Nishimoto1, Brock Kaya

  • 1Department of Pathology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA.

Archives of Pathology & Laboratory Medicine
|August 2, 2012
PubMed
Summary

Cerebellar liponeurocytoma is a rare brain tumor found in adults, characterized by specific neurocytic cells and lipidization. It is now classified as a Grade II neoplasm due to its recurrence rate.

Area of Science:

  • Neuropathology
  • Neuro-oncology
  • Central Nervous System Tumors

Background:

  • Cerebellar liponeurocytoma is a rare neoplasm with distinctive morphologic features.
  • This tumor typically involves the cerebellar hemispheres of middle-aged to older adults.
  • The tumor is composed of uniform neurocytic cells with round to oval nuclei and pale to clear cytoplasm.

Purpose of the Study:

  • To describe the key morphologic and immunohistochemical features of cerebellar liponeurocytoma.
  • To highlight its reclassification as a Grade II neoplasm in the 2007 WHO classification.
  • To underscore the clinical implications of its revised grading.

Main Methods:

  • Morphologic analysis of tumor tissue.
  • Immunohistochemistry to confirm neurocytic differentiation.

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  • Review of World Health Organization classification updates.

    • Main Results:

    • Tumor cells exhibit uniform neurocytic morphology with variable lipidization resembling adipose tissue.
    • Immunohistochemistry confirms neurocytic differentiation.
    • Reclassification as a Grade II neoplasm reflects a higher recurrence rate.

    Conclusions:

    • Cerebellar liponeurocytoma is a distinct entity with characteristic features.
    • The Grade II classification emphasizes the need for awareness of its recurrence potential.
    • Accurate diagnosis and grading are crucial for patient management.