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Glioblastoma multiforme masquerading as a pleomorphic xanthoastrocytoma
S J Gaskill1, A E Marlin, V Saldivar
1University of Texas Health Science Center, San Antonio 78284.
Summary
Pleomorphic xanthoastrocytoma (PXA), once thought benign, can exhibit aggressive behavior. These astrocytomas with PXA components highlight the need for careful management due to potential malignant transformation.
Area of Science:
- Neuro-oncology
- Pathology
- Neurosurgery
Background:
- Pleomorphic xanthoastrocytoma (PXA) is historically classified as a benign glial tumor.
- Recent observations suggest a potential for aggressive behavior and malignant transformation.
Observation:
- Two cases of astrocytomas with PXA components exhibiting aggressive clinical behavior are presented.
- Key characteristics include meningeal proximity and a high mitotic index.
Findings:
- PXA should be considered within a spectrum of astrocytomas, not exclusively as a benign entity.
- The presence of PXA components can indicate a more aggressive tumor phenotype.
Implications:
- Recognizing the potential for malignant transformation in PXA is crucial for accurate diagnosis.
- Therapeutic strategies may need to be adapted for these potentially aggressive astrocytomas.
