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Medulloblastoma in adults

M D Prados1, R E Warnick, W M Wara

  • 1Neuro-Oncology Service, School of Medicine, University of California, San Francisco, USA.

International Journal of Radiation Oncology, Biology, Physics
|July 15, 1995
PubMed
Summary

Adult medulloblastoma staging and treatment should mirror pediatric approaches. Extent of disease significantly impacts outcomes, with poor-risk patients experiencing shorter survival and lower survival rates.

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Area of Science:

  • Neuro-oncology
  • Clinical Neurology
  • Cancer Research

Background:

  • Medulloblastoma is a primary brain tumor that can occur in adults.
  • Prognosis and treatment strategies for adult medulloblastoma are not as well-established as for pediatric cases.

Purpose of the Study:

  • To investigate the correlation between the extent of medulloblastoma disease and patient outcomes in adults.
  • To determine if pediatric staging and treatment protocols are applicable to adult medulloblastoma patients.

Main Methods:

  • Retrospective review of adult patients (over 15 years) with newly diagnosed or recurrent medulloblastoma.
  • Data collected included demographics, symptoms, radiographic findings, extent of resection, staging, imaging (CT/MR), histopathology, treatment, response, recurrence, and survival.

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  • Patients were categorized as "poor-risk" (<75% tumor removal, metastatic disease, or invasion) or "good-risk".

    • Main Results:

    • 47 adult patients were identified; 26 were classified as poor-risk.
    • All patients received radiation therapy; 32 had chemotherapy.
    • Poor-risk patients had significantly lower 5-year overall (54% vs. 81%) and disease-free (38% vs. 58%) survival rates compared to good-risk patients.
    • Median survival was 282 weeks for poor-risk patients; not reached for good-risk.
    • Tumor recurrence was most common in the posterior fossa.

    Conclusions:

    • Findings suggest adult medulloblastoma outcomes and patterns are similar to those in children.
    • Staging in adults should include cerebrospinal fluid assessment and spinal imaging.
    • Treatment should be stage-based, incorporating craniospinal irradiation, with chemotherapy reserved for poor-risk cases.