Advancing Surgery for Pediatric Diffuse Midline Glioma: LITT Followed by Craniotomy

Clinicians recently achieved a significant milestone in neuro-oncology by applying a combined surgical technique for pediatric diffuse midline glioma. Historically, surgeons associated the resection of deep-seated thalamic tumors with high morbidity and mortality risks. This specific case involved a 6-year-old boy presenting with a 4.5-cm mass in the left basal ganglia and thalamus. Consequently, the surgical team utilized Laser Interstitial Thermal Therapy (LITT) followed by a craniotomy to facilitate tumor debulking.

Surgical Insights for Pediatric Diffuse Midline Glioma

The patient initially presented with progressive hemibody weakness and aphasia, which are common clinical indicators for aggressive midline lesions. He underwent an endoscopic third ventriculostomy and biopsy to manage hydrocephalus and confirm the diagnosis. After confirming the pediatric diffuse midline glioma, the team opted for a dual-stage approach to maximize resection. Furthermore, they observed that LITT provided a preliminary thermal ablation of the core. However, the procedure revealed unexpected intraoperative findings regarding tissue texture. Specifically, the post-LITT tissue appeared firmer than anticipated with poorly defined borders. Despite these challenges, the patient remained at his neurological baseline and eventually proceeded to adjuvant radiation therapy.

Moreover, this case study demonstrates the feasibility and safety of combining thermal ablation with open resection in a pediatric setting. While LITT provides a minimally invasive starting point, the subsequent craniotomy allows for more extensive debulking than laser therapy could achieve alone. Therefore, this hybrid method may offer a new pathway for managing lesions previously deemed too risky for standard surgery. Recent clinical advancements, such as the FDA approval of dordaviprone for recurrent H3 K27M-mutant gliomas, also continue to expand the therapeutic landscape for these patients.

Frequently Asked Questions

What is the role of LITT in managing pediatric diffuse midline glioma?

LITT serves as a minimally invasive tool to ablate deep-seated tumor tissue using thermal energy. In this clinical scenario, surgeons used it as a precursor to craniotomy to assist in debulking a lesion that would be difficult to treat with a single modality.

How does tissue consistency change after LITT?

Surgeons in this case noted that the tissue following thermal therapy exhibited a firmer consistency and less distinct borders. This finding suggests that while LITT helps with internal ablation, the mechanical complexity of the subsequent resection may remain similar to non-ablated tissue.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or professional consultation. Refer to the latest local and national guidelines for clinical practice.

References

1. Kondapavulur S et al. Laser insterstitial thermal therapy followed by craniotomy for tumor resection for pediatric diffuse midline glioma: illustrative case. J Neurosurg Case Lessons. 2026 Apr 06. doi: undefined. PMID: 41941828.


2. National Comprehensive Cancer Network (NCCN). Clinical Practice Guidelines in Oncology: Pediatric Central Nervous System Cancers. September 2025.


3. Arocho-Quinones EV et al. Laser interstitial thermal therapy for pediatric brain tumors: A review. J Neurosurg Pediatr. 2020;26(1):1-10.