Related Experiment Videos
Cytogenetic, molecular genetic and pathological analyses in 126 meningiomas
R H Lekanne Deprez1, P H Riegman, E van Drunen
1Department of Pathology, Erasmus University, Rotterdam, The Netherlands.
Journal of Neuropathology and Experimental Neurology
|March 1, 1995
Summary
Chromosomal abnormalities, particularly involving chromosome 22, are linked to meningioma grade and location. Convexity meningiomas in males showed more aggressive features compared to base meningiomas in females.
Area of Science:
- Neurosurgery
- Genetics
- Oncology
Background:
- Meningiomas are the most common primary intracranial tumors, with varying grades and clinical behaviors.
- Understanding the genetic underpinnings of meningiomas is crucial for diagnosis and prognosis.
Purpose of the Study:
- To investigate the relationship between chromosomal abnormalities and clinicopathological features of meningiomas.
- To analyze genetic alterations, focusing on chromosome 22q, in a cohort of meningiomas.
Main Methods:
- A combined cytogenetic and molecular genetic approach was employed.
- Tumor and patient characteristics of 126 meningiomas were statistically analyzed.
- Chromosomal aberrations and loss of markers on chromosome 22q were assessed in 93 cases.
Main Results:
- Loss of chromosome 22 (complete or partial) was observed in 66 cases, with structural aberrations in at least 12.
- Significant association found between the number of chromosomal abnormalities and tumor grade (II/III).
- Convexity meningiomas (often in males) showed higher grade, chromosome 22 loss, and complex karyotypes compared to base meningiomas (often in females).
Conclusions:
- Chromosomal aberrations, especially involving chromosome 22, correlate with meningioma grade and location.
- Complex karyotypes are more prevalent in higher-grade meningiomas.
- Tumor location and patient sex are associated with specific genetic alterations and tumor characteristics.