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Treatment of Recurrent Childhood High-Grade Astrocytomas

    Most patients with high-grade astrocytomas or gliomas will eventually have tumor recurrence, usually within 3 years of original diagnosis but perhaps many years after initial treatment. Disease may recur at the primary tumor site, at the margin of the resection/radiation bed, or at noncontiguous central nervous system sites. Systemic relapse is rare but may occur. At the time of recurrence, a complete evaluation for extent of relapse is indicated for all malignant tumors. Biopsy or surgical resection may be necessary for confirmation of relapse because other entities, such as secondary tumor and treatment-related brain necrosis, may be clinically indistinguishable from tumor recurrence. The need for surgical intervention must be individualized on the basis of the initial tumor type, the length of time between initial treatment and the reappearance of the mass lesion, and the clinical picture.

    Patients for whom initial treatment fails may benefit from additional treatment.[1] High-dose, marrow-ablative chemotherapy with hematopoietic stem cell transplant may be effective in a subset of patients with minimal residual disease at time of treatment.[2]; [3][Level of evidence: 3iiiA] Such patients should also be considered for entry into trials of novel therapeutic approaches. Information about ongoing clinical trials is available from the NCI Web site.

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    Quality-of-life issues are important in this group of patients, and are difficult to assess due to various treatment modalities. Whereas intelligence quotient is usually maintained, behavioral issues and memory deficits attributed to the frontal lobe and hypothalamus are common.[1] Other common problems include visual loss, obesity (which can be life threatening), and the almost universal need for life-long endocrine replacement with multiple pituitary hormones.[2,3,4][Level of evidence: 3iiiC] Vasculopathies...

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    Treatment Options Under Clinical Evaluation

    Early-phase therapeutic trials may be available for selected patients. These trials may be available via Children's Oncology Group phase I institutions, the Pediatric Brain Tumor Consortium, or other entities. Information about ongoing clinical trials is available from the NCI Web site.

    Current Clinical Trials

    Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with recurrent childhood astrocytoma or other tumor of glial origin. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria.

    General information about clinical trials is also available from the NCI Web site.

    References:

    1. Warren KE, Gururangan S, Geyer JR, et al.: A phase II study of O6-benzylguanine and temozolomide in pediatric patients with recurrent or progressive high-grade gliomas and brainstem gliomas: a Pediatric Brain Tumor Consortium study. J Neurooncol 106 (3): 643-9, 2012.
    2. McCowage GB, Friedman HS, Moghrabi A, et al.: Activity of high-dose cyclophosphamide in the treatment of childhood malignant gliomas. Med Pediatr Oncol 30 (2): 75-80, 1998.
    3. Finlay JL, Dhall G, Boyett JM, et al.: Myeloablative chemotherapy with autologous bone marrow rescue in children and adolescents with recurrent malignant astrocytoma: outcome compared with conventional chemotherapy: a report from the Children's Oncology Group. Pediatr Blood Cancer 51 (6): 806-11, 2008.

      WebMD Public Information from the National Cancer Institute

      Last Updated: February 25, 2014
      This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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