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Review
. 2020 Aug 8:11:231.
doi: 10.25259/SNI_496_2019. eCollection 2020.

Laser interstitial thermal therapy in neuro-oncology applications

Affiliations
Review

Laser interstitial thermal therapy in neuro-oncology applications

Christopher S Hong et al. Surg Neurol Int. .

Abstract

Background: Laser interstitial thermal therapy (LITT) is a minimally invasive surgical treatment for multiple intracranial pathologies that are of growing interest to neurosurgeons and their patients and is emerging as an effective alternative to standard of care open surgery in the neurosurgical armamentarium. This option was initially considered for those patients with medical comorbidities and lesion-specific characteristics that confer excessively high risk for resection through a standard craniotomy approach but indications are changing.

Methods: The PubMed database was searched for studies in the English literature on LITT for the treatment of primary and metastatic brain tumors, meningiomas, as well as for radiation necrosis (RN) in previously irradiated brain tumors.

Results: This review provides an update of the relevant literature regarding application of LITT in neurosurgical oncology for the treatment of de novo and recurrent primary gliomas and brain metastases radiographically regrowing after previous irradiation as recurrent tumor or RN. In addition, this review details the limited experience of LITT with meningiomas and symptomatic peritumoral edema after radiosurgery. The advantages and disadvantages, indications, and comparisons to standard of care treatments such as craniotomy for open surgical resection are discussed for each pathology. Finally, the literature on cost-benefit analyses for LITT are reviewed.

Conclusion: The studies discussed in this review have helped define the role of LITT in neurosurgical oncology and delineate optimal patient selection and tumor characteristics most suitable to this intervention.

Keywords: Brain metastasis; Craniotomy; Glioma; Laser interstitial thermal therapy; Meningioma; Radiation necrosis.

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Conflict of interest statement

Dr. Chiang is a consultant for Monteris Medical Inc. (Minnesota, USA) and speaker for BrainLab, Inc. (Munich, Germany).

Figures

Figure 1:
Figure 1:
Summary of application for laser interstitial thermal therapy in high-grade glioma.
Figure 2:
Figure 2:
Summary of application for laser interstitial thermal therapy in recurrent lesions after prior radiosurgery.
Figure 3:
Figure 3:
Clinical imaging for case illustration of recurrent glioblastoma. Preoperative (a) T1-weighted postcontrast and (b) T2- weighted FLAIR magnetic resonance imaging (MRI) demonstrating an enhancing lesion in the left medial temporal region with surrounding edema. Imaging obtained 2 weeks after laser interstitial thermal therapy (LITT) showed a (c) mildly increased size of the enhancing lesion and (d) mild reduction of perilesional edema. An MRI obtained 2 months after LITT demonstrated more definitive (e) reduction in size of the enhancing lesion and (f) further diminishment of edema.
Figure 4:
Figure 4:
Clinical imaging for case illustration of radiation necrosis. Preoperative (a) T1-weighted postcontrast and (b) T2- weighted FLAIR magnetic resonance imaging (MRI) demonstrating an enhancing lesion in the left parieto-occipital region with surrounding edema. Imaging obtained 1 month after laser interstitial thermal therapy (LITT) showed a (c) mildly increased size of the enhancing lesion but (d) reduction of perilesional edema. An MRI obtained 1 year after LITT demonstrated (e) drastic reduction in size of the enhancing lesion and (f) further diminishment of edema.

References

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