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Gamma knife radiosurgery in brain metastases from testicular tumors

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Abstract

To our knowledge, there are no published reports on the effectiveness of radiosurgery in the management of brain metastases from testicular nonseminomatous germ cell tumor. The authors evaluate the results of gamma knife (GK) treatment in three patients with these unusual intracranial lesions. Between April 1995 and July 2001, three patients with brain metastasis from testicular nonseminomatous germ cell tumor underwent adjuvant radiosurgery at our department. The primary tumor had been surgically removed in all cases. At diagnosis, one patient was stage IB and two were stage III poor risk. Chemotherapy and whole brain radiotherapy were administered before radiosurgery in all cases. Pre-GK radiotherapy was administered with a daily fraction dosage of 1.8–2.0 Gy. The indications for radiosurgery were tumor volume <20 cm3, microsurgery too risky, refusal of surgery. All the lesions were located in eloquent brain areas. Post-GK high-dose chemotherapy with autologous peripheral-blood stem-cell rescue was administered in two cases due to systemic recurrence of the disease. All patients are still alive with a median and mean follow-up period after radiosurgery of 63 and 68.3 mo, respectively. They had no neurological deficits at the latest examination. Neuroradiological follow-up invariably showed tumor growth control (complete response in two cases and partial response in one) with typically delayed post-radiosurgical imaging changes (transient in two cases and long-lasting in one). In conclusion, GK seems to be highly effective and safe in brain metastases from testicular nonseminomatous germ cell tumor. In cases with diffuse metastatic brain involvement, the whole brain radiotherapy preceding radiosurgery should be delivered with ≤1.8 Gy daily fraction to prevent the risk of long-lasting post-radiosurgical imaging changes.

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Authors and Affiliations

  1. Department of Neurosurgery, University Hospital, Piazzale Stefani 1, 37126, Verona, Italy

    A. Nicolato MD, A. Ria, R. Foroni, F. Alessandrini, F. Lupidi, P. Leone & M. Gerosa

  2. Department of Medical Oncology, University Hospital, Piazzale Stefani 1, 37126, Verona, Italy

    P. Manno, T. Sava & G. L. Cetto

  3. Department of Radiation Oncology, University Hospital, Piazzale Stefani 1, 37126, Verona, Italy

    S. Maluta

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  1. A. Nicolato MD
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  2. A. Ria
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  3. R. Foroni
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Correspondence to A. Nicolato MD.

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Nicolato, A., Ria, A., Foroni, R. et al. Gamma knife radiosurgery in brain metastases from testicular tumors. Med Oncol 22, 45–56 (2005). https://doi.org/10.1385/MO:22:1:045

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  • DOI: https://doi.org/10.1385/MO:22:1:045

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