Radiotherapy for Brain Metastasis and Long-Term Survival

A special issue of Medicina (ISSN 1648-9144). This special issue belongs to the section "Oncology".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 1757

Special Issue Editors


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Guest Editor
Radiotherapy Unit, University of Messina, Messina, Italy
Interests: CyberKnife; radiosurgery; SBRT; FSRT; radiotherapy
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Guest Editor
Unit of Neurosurgery, IRCCS Istituto delle Scienze Neurologiche di Bologna, 40139 Bologna, Italy
Interests: neurosurgery; CyberKnife; radiosurgery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Patients with brain metastases can benefit from radiotherapy, although the long‐term benefits of radiotherapy remain unclear. Stereotactic radiosurgery (SRS) improves the local control of brain metastases. Furthermore, the QUARTZ trial revealed that whole-brain radiotherapy (WBRT) provides limited benefits, relative to best supportive care alone, for patients with brain metastases from non-small cell lung cancer. The literature data revealed that poor overall survival after WBRT was associated with poor performance status, older age, >3 intracranial metastases, and uncontrolled primary tumors. Based on these conflicting findings, questions have emerged regarding the benefits of radiotherapy for brain metastases that were determined based on previous clinical studies. The combined evidence suggests that WBRT offers no substantial benefit to most patients with brain metastases from lung cancer in terms of improved survival, overall quality of life, or reduction in steroid use. The implication for clinical care is that optimal supportive care is as effective as supportive care plus WBRT, and the implication for future research is that potential new treatments could be assessed in addition to supportive care, rather than in addition to, or in place of, WBRT. Given the lack of long-term analyses of the benefits of radiotherapy in this setting, it is necessary to compare the long-term results of radiotherapy for brain metastases.

Therefore, we encourage authors to submit their original research articles, reviews, systematic reviews, case reports, clinical outcome studies or new surgical techniques and oncological therapies regarding this subject.

Dr. Antonio Pontoriero
Dr. Alfredo Conti
Guest Editors

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Keywords

  • whole-brain irradiation
  • stereotactic radiosurgery
  • brain metastasis
  • median survival
  • risk factor and long-term survival

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Published Papers (1 paper)

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Research

12 pages, 1917 KiB  
Article
Assessment of Radiation Dosage to the Hippocampi during Treatment of Multiple Brain Metastases Using Gamma Knife Therapy
by Maciej Laskowski, Bartłomiej Błaszczyk, Marcin Setlak, Maciej Kuca, Arkadiusz Lech, Kamil Kłos and Adam Rudnik
Medicina 2024, 60(2), 246; https://doi.org/10.3390/medicina60020246 - 31 Jan 2024
Viewed by 1305
Abstract
Background and Objectives: Brain metastases (BMs) pose significant clinical challenges in systemic cancer patients. They often cause symptoms related to brain compression and are typically managed with multimodal therapies, such as surgery, chemotherapy, whole brain radiotherapy (WBRT), and stereotactic radiosurgery (SRS). With modern [...] Read more.
Background and Objectives: Brain metastases (BMs) pose significant clinical challenges in systemic cancer patients. They often cause symptoms related to brain compression and are typically managed with multimodal therapies, such as surgery, chemotherapy, whole brain radiotherapy (WBRT), and stereotactic radiosurgery (SRS). With modern oncology treatments prolonging survival, concerns about the neurocognitive side effects of BM treatments are growing. WBRT, though widely used for multiple BMs, has recognized neurocognitive toxicity. SRS, particularly Gamma Knife (GK) therapy, offers a minimally invasive alternative with fewer side effects, suitable for patients with a quantifiable number of metastases and better prognoses. Materials and Methods: A retrospective analysis was conducted on 94 patients with multiple BMs treated exclusively with GK at an academic medical center. Patients with prior WBRT were excluded. This study focused on the mean radiation dose received by the hippocampal area, estimated according to the ‘Hippocampal Contouring: A Contouring Atlas for RTOG 0933’ guidelines. Results: The precision of GK equipment results in mean doses of radiation that are lower than those suggested by RTOG 0933 and observed in other studies. This precision may help mitigate cognitive dysfunction and other side effects of hippocampal irradiation. Conclusions: GK therapy facilitates the administration of smaller, safer radiation doses to the hippocampi, which is advantageous even for lesions in the temporal lobe. It is feasible to treat multiple metastases, including cases with more than 10, but it is typically reserved for patients with fewer metastases, with an average of 3 in this study. This underlines GK’s potential for reducing adverse effects while managing BMs effectively. Full article
(This article belongs to the Special Issue Radiotherapy for Brain Metastasis and Long-Term Survival)
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