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Bilateral thalamic tumors in children.

Concezio Di Rocco1, Aldo Iannelli

  • 1Section of Pediatric Neurosurgery, Institute of Neurosurgery, Catholic University, Largo A. Gemelli, 8, 00168 Rome, Italy.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
|August 23, 2002
PubMed
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Primary bilateral thalamic tumors (PBTTs) are rare pediatric brain tumors. Surgical intervention is challenging due to bilateral involvement, with diagnosis often relying on histology, and tumors are typically low-grade astrocytomas.

Area of Science:

  • Pediatric Neurosurgery
  • Neuro-oncology
  • Brain Tumor Research

Background:

  • The incidence of thalamic tumors is not well-established, and primary bilateral thalamic tumors (PBTTs) are even less defined.
  • This study reports on 4 new pediatric cases of PBTTs.

Observation:

  • Neuroimaging excluded midline or pineal involvement, suggesting distinct origins rather than contralateral spread.
  • Lesions presented as symmetrical masses, confined to thalamic nuclei, often sparing white matter initially.
  • Pediatric PBTTs did not present with dementia, unlike adult cases; symptoms included increased intracranial pressure and movement disorders.

Findings:

  • PBTTs are typically low-grade astrocytomas (WHO Grade II), but anaplastic areas (WHO Grade III/IV) can occur.
  • Surgical resection is difficult due to diffuse bilateral involvement, making histological diagnosis the primary surgical goal.

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Implications:

  • Understanding the unique presentation and histology of pediatric PBTTs is crucial for diagnosis and management.
  • Further research is needed to explore treatment strategies for these rare pediatric brain tumors.