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Rhabdoid glioblastoma
J Wyatt-Ashmead1, B K Kleinschmidt-DeMasters, D A Hill
1Department of Pathology, The Children's Hospital, Denver, CO, USA.
Clinical Neuropathology
|January 5, 2002
Summary
This study details a rare aggressive brain tumor in an 18-year-old male, showing progressive rhabdoid transformation of a glioma. The findings highlight diagnostic and therapeutic challenges for these central nervous system (CNS) rhabdoid tumors.
Area of Science:
- Neuro-oncology
- Cancer biology
- Cytogenetics
Background:
- Rhabdoid tumors are rare neoplasms with characteristic microscopic features and frequent chromosome 22 abnormalities.
- In the central nervous system (CNS), rhabdoid tumors typically occur in young children, often as atypical teratoid/rhabdoid tumors with a primitive neuroectodermal tumor (PNET) component.
Observation:
- A case of an aggressive, supratentorial CNS rhabdoid tumor in an 18-year-old male is presented.
- The tumor was associated with epithelioid glioblastoma and appeared to originate from low-grade glioma areas.
- The rhabdoid component increased with successive resections, and no PNET areas were identified.
Findings:
- Electron microscopy and immunohistochemistry confirmed features typical of rhabdoid tumors.
- Cytogenetic studies revealed multiple tumor clones with monosomy 22.
- The case demonstrates progressive rhabdoid transformation of a glioma.
Implications:
- This case expands the known spectrum of CNS tumors exhibiting a rhabdoid phenotype.
- It underscores the diagnostic and therapeutic challenges posed by CNS rhabdoid tumors.
- Further research into the mechanisms of rhabdoid transformation in gliomas is warranted.