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  • Title: Endoscopic resection of thalamic lesions via supracerebellar infratentorial approach: a case series and technical note.
    Author: Liu S, Xie T, Wu S, Li C, Liu T, Zhao P, Chen P, Zhang X.
    Journal: Neurosurg Rev; 2022 Dec; 45(6):3817-3827. PubMed ID: 36352046.
    Abstract:
    The deep location of the thalamus and the complex neural circuits in the surrounding area make surgery extremely challenging. Feasibility and advisability of using a supracerebellar infratentorial approach (SCITA) for endoscopic resection of thalamic lesions remains to be further evaluated. Fifteen patients who underwent endoscopic resection of thalamic via SCITA from 2014 to 2021 were retrospectively collected. We analyzed preoperative tumor-related variables and surgical procedures in detail, as well as postoperative outcomes. Lesions mainly located in the posterior and/or medial part of the thalamus, and some of them expanded downward, or backward. The mean size of them was 30 × 24 mm. Five of the nine patients with preoperative hydrocephalus underwent cerebrospinal fluid shunts to relieve increased intracranial pressure. Among the 15 patients, 4 were glioblastoma, 3 were pilocytic astrocytoma, and the rest included 1 case of anaplastic astrocytoma, melanoma, polymorphous low-grade neuroepithelial tumor of the young, rosette-forming glioneuronal tumor, inflammatory lesion, diffuse midline glioma, and cavernous hemangioma. The majority of patients (10/15) achieved gross total resection, which has become more pronounced since paramedian SCITA was used in place of the midline approach in 2020 (6/8). Three patients had unresolved or new onset of clinical symptoms after surgery, resulting in a decreased KPS score at discharge. Neuro-endoscopic techniques can ameliorate many of the shortcomings of the SCITA. With the accumulation of experience and technological progress, more deficiencies of this approach may be improved, enabling safe and effective resection of posterior and/or medial part thalamic lesions.
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