World neurosurgery · 2018
Toxicity of Radiosurgery for Brainstem Metastases.
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Patel Ajay, Dong Tuo, Ansari Shaheryar, Cohen-Gadol Aaron, Watson Gordon A, Moraes Fabio Ynoe de, Nakamura Masaki, Murovic Judith, Chang Steven D, Hatiboglu Mustafa Aziz, Chung Caroline, Miller James C, Lautenschlaeger Tim
Аннотация
BACKGROUND: Although stereotactic radiosurgery (SRS) is an effective modality in the treatment of brainstem metastases (BSM), radiation-induced toxicity remains a critical concern. To better understand how severe or life-threatening toxicity is affected by the location of lesions treated in the brainstem, a review of all available studies reporting SRS treatment for BSM was performed.
METHODS: Twenty-nine retrospective studies investigating SRS for BSM were reviewed.
RESULTS: The rates of grade 3 or greater toxicity, based on the Common Terminology Criteria for Adverse Events, varied from 0 to 9.5% (mean 3.4 ± 2.9%). Overall, the median time to toxicity after SRS was 3 months, with 90% of toxicities occurring before 9 months. A total of 1243 cases had toxicity and location data available. Toxicity rates for lesions located in the medulla were 0.8% (1/131), compared with midbrain and pons, respectively, 2.8% (8/288) and 3.0% (24/811).
CONCLUSIONS: Current data suggest that brainstem substructure location does not predict for toxicity and lesion volume within this cohort with median tumor volumes 0.04-2.8 cc does not predict for toxicity.
METHODS: Twenty-nine retrospective studies investigating SRS for BSM were reviewed.
RESULTS: The rates of grade 3 or greater toxicity, based on the Common Terminology Criteria for Adverse Events, varied from 0 to 9.5% (mean 3.4 ± 2.9%). Overall, the median time to toxicity after SRS was 3 months, with 90% of toxicities occurring before 9 months. A total of 1243 cases had toxicity and location data available. Toxicity rates for lesions located in the medulla were 0.8% (1/131), compared with midbrain and pons, respectively, 2.8% (8/288) and 3.0% (24/811).
CONCLUSIONS: Current data suggest that brainstem substructure location does not predict for toxicity and lesion volume within this cohort with median tumor volumes 0.04-2.8 cc does not predict for toxicity.