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Published on: January 14, 2014
Treatment failure in intracranial primary germinomas
Kyu-Won Shim1, Tae-Gon Kim, Chang-Ok Suh
1Department of Neurosurgery, Brain Korea 21 Project for Medical Science, Brain Research Institute, Yonsei University College of Medicine, Seoul, South Korea.
Summary
Reducing radiation volume, not dose, is key for treating recurrent intracranial germinoma. Further dose reduction with chemotherapy warrants investigation for improved treatment strategies.
Area of Science:
- Neuro-oncology
- Radiation Oncology
- Pediatric Oncology
Background:
- Intracranial pure germinoma typically requires 40-50 Gy radiation for >90% cure rates.
- Reducing radiation toxicity is crucial, prompting research into lower doses and volumes.
- This study evaluates therapeutic strategies for recurrent germinoma.
Purpose of the Study:
- To analyze treatment outcomes for recurrent intracranial germinoma.
- To identify factors influencing disease control and recurrence.
- To guide optimal therapeutic strategies for physicians.
Main Methods:
- Retrospective review of 117 germinoma cases (1979-2002), focusing on 10 recurrent cases.
- Analysis of three treatment modalities: radiation alone, chemotherapy alone, and combined therapy.
- Evaluation of 10-year overall and relapse-free survival rates.
Main Results:
- Radiation therapy and combined therapy showed high efficacy in disease control.
- Tumor recurrence correlated with radiation volume, not dose.
- Chemotherapy alone resulted in earlier and more frequent recurrences.
- Combined therapy reduced radiation dose but had associated toxicity.
Conclusions:
- Further investigation into radiation dose reduction for germinoma is warranted.
- Radiation therapy with <40 Gy should be compared with chemotherapy plus low-dose irradiation.
- Optimizing treatment involves balancing efficacy with reduced toxicity.
