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Published on: June 20, 2017
[Ag-NOR in meningiomas. Clinical and morphologic study of 14 cases]
M Cerdá-Nicolás1, M Pérez-Bacet, J Piquer
1Departamento de Patología, Hospital Clínico Universitario, Facultad de Medicina, Universidad de Valencia.
Summary
This study quantifies nucleolar organizer regions (NORs) in 14 meningiomas. NOR quantification offers a reliable method for assessing neoplastic proliferative activity in different tumor subtypes.
Area of Science:
- Neuro-oncology
- Histopathology
- Cellular biology
Context:
- Meningiomas are primary tumors of the central nervous system.
- Accurate assessment of proliferative activity is crucial for meningioma subtyping and prognosis.
- Current methods for assessing proliferative activity can be time-consuming.
Purpose:
- To analyze and quantify nucleolar organizer regions (NORs) in various meningioma subtypes.
- To correlate NOR quantification with clinical and biological patient characteristics.
- To evaluate the technical aspects and reliability of silver impregnation for NOR analysis.
Summary:
- Fourteen meningiomas were analyzed for the number of NORs (NORAg).
- Results were compared across different meningioma subtypes and correlated with patient data.
- The study assessed the silver impregnation technique for routine NORAg analysis.
Impact:
- Proposes a fast and reliable method for evaluating neoplastic proliferative activity in meningiomas.
- Potential to improve routine histopathological assessment of meningiomas.
- Aids in understanding the biological behavior of different meningioma subtypes.

