• World Neurosurg · Jul 2024

    Observational Study

    Safety and Efficacy of Biopsy in Patients with Diffuse Intrinsic Pontine Gliomas.

    • Aprajita Chaturvedi, Nishanth Sadashiva, Sathyarao Kalahasti, Subhas Konar, Uday Krishna, Prabhuraj Ar, Dhaval Shukla, Manish Beniwal, Nupur Pruthi, Arivazhagan Arima, Jitender Saini, Shilpa Rao, and Vani Santosh.
    • Department of Neurosurgery, National Institute of Mental Health and Neurosciences, Bangalore, India.
    • World Neurosurg. 2024 Jul 1; 187: e870e882e870-e882.

    BackgroundDiffuse intrinsic pontine gliomas are aggressive tumors that carry a poor prognosis with a 2-year survival rate of <10%. The imaging appearance is often pathognomonic, and surgical biopsy is not mandatory to initiate treatment in children. Studies of biopsy samples provide insight into the disease's molecular pathobiology and open prospects for targeted therapy. This study was conducted to determine the diagnostic yield and safety of stereotactic biopsies.MethodsThis is a prospective observational study from a single tertiary health care center. All patients with clinical and radiological features diagnostic of diffuse intrinsic pontine gliomas (DIPGs) who underwent biopsy from July 2018 to June 2023 were included. Biopsies were performed using either stereotactic frame-based, frameless, or endoscopic techniques.ResultsA total of 165 patients with DIPGs were evaluated in the study period. The option of biopsy with its associated risks and benefits was offered to all patients. A total of 76 biopsies were performed in 74 patients (40 children and 34 adults, including 2 repeat biopsies). The median age was 15 years. Diffuse midline gliomas, H3K27M altered, was the most common histopathological diagnosis (85% pediatric and 55.9% adults). The diagnostic efficacy of the procedure was 94.7%. The complication rate was 10.8%, with no permanent neurological deficits due to surgery. There was no procedure-related mortality.ConclusionsEstablishing the safety of the procedure could be an important step toward popularizing the concept, which might offer a better understanding of the disease. Brainstem eloquence and a lack of direct benefit to patients are the primary obstacles to brainstem biopsy.Copyright © 2024 Elsevier Inc. All rights reserved.

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