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  • Title: Concurrent cisplatin therapy and iodine 125 brachytherapy for recurrent malignant brain tumors.
    Author: Chamberlain MC, Barba D, Kormanik P, Berson AM, Saunders WM, Shea MC.
    Journal: Arch Neurol; 1995 Feb; 52(2):162-7. PubMed ID: 7848125.
    Abstract:
    OBJECTIVE: Toxicity and safety study of concurrent cisplatin therapy and iodine 125 (125I) brachytherapy. BACKGROUND: Iodine 125 brachytherapy has an established role in surgically accessible recurrent tumors of brain. Cisplatin has antitumoral activity against glial neoplasms and has demonstrated sensitization of tumor to radiotherapy. DESIGN/METHODS: In 16 patients (age range, 13 to 68 years, median, 47 years), stereotactically placed catheters were afterloaded with 125I sources. A median 50-Gy minimum treatment volume dose was delivered during a 100-hour period along with cisplatin (20 mg/m2 per day for 5 days). Histologic diagnoses included glioblastoma multiforme (n = 11), anaplastic astrocytoma (n = 3), ependymoma (n = 1), and anaplastic oligodendroglioma (n = 1). Tumor volumes ranged from 7.0 to 73 cm3 (median, 25 cm3). RESULTS: Early complications included headache (n = 7), transient exacerbations of preexisting neurologic deficits (n = 5), seizures (n = 3), and nausea/vomiting (n = 3). Late complications included steroid dependency (n = 10), progressive dementia in the absence of recurrent tumor (n = 1), and radiation-induced necrosis (n = 9) requiring reoperation (n = 9). Fifteen of 16 patients were assessable, with a median follow-up time of 9.5 months. Brachytherapy was discontinued in one patient owing to an acute subdural hematoma. A partial response was seen in five patients, disease remained stable in seven patients, and disease progressed in three patients. CONCLUSIONS: We conclude that 125I brachytherapy with concurrent cisplatin therapy is associated with an acceptable level of toxic effects and warrants further investigation.
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