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Published on: July 5, 2021
35 year-old man with falcine tumor
Eytan Raz1, Manila Antonelli, Angelo Pichierri
1Department of Neurological Sciences-Sapienza University of Rome-Italy.
Brain Pathology (Zurich, Switzerland)
|August 11, 2010
Summary
A rare brain tumor, primary intracranial solitary leptomeningeal astrocytoma (PLA), was diagnosed despite initial radiological suspicion of meningioma. This case highlights the crucial role of neuropathology in diagnosing uncommon central nervous system neoplasms.
Area of Science:
- Neuro-oncology
- Neurosurgery
- Neuropathology
Background:
- Meningiomas are common extra-axial tumors, often arising from the falx cerebri.
- Primary intracranial solitary leptomeningeal astrocytoma (PLA) is an extremely rare CNS neoplasm.
Observation:
- A 35-year-old male presented with symptoms suggestive of a brain mass.
- Radiological imaging indicated a falx meningioma, but surgical and histopathological analysis revealed PLA, WHO grade 3.
- Microscopic examination showed high cellularity, mitotic figures, and glial fibrillary acidic protein reactivity, with a MIB-1 index of 15%.
Findings:
- The final diagnosis of PLA was established through histopathological examination, challenging the initial radiological assessment.
- Retrospective analysis confirmed that neuroradiology alone was insufficient for definitive differential diagnosis.
- This case underscores the critical importance of neuropathological evaluation for rare intracranial lesions.
Implications:
- Accurate diagnosis of rare CNS tumors like PLA is essential for appropriate patient management and treatment.
- This case emphasizes the indispensable role of neuropathologists in differentiating challenging neuro-oncological diagnoses.
- Further research into PLA and its diagnostic markers may improve early detection and treatment strategies.
