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Abstract

Intraventricular surgery represents a technical challenge due to the depth of the lesions, the limited surgical exposure and the risk of damage to eloquent structures. In this context, robotic exoscopy has emerged as an alternative to conventional surgical microscope, providing high-definition three-dimensional visualization, better lighting and ergonomic advantages. The case is presented of a patient with right frontal intraventricular subependimoma, treated by a minimally invasive transfrontal, transulcal microsurgical approach assisted by robotic exoscope. Preoperative planning with neuroimaging allowed the definition of a safe trajectory, minimizing cortical and subcortical disruption. During the procedure, the exoscope facilitated adequate magnification and visualization of the deep field, allowing precise and controlled dissection. Complete resection of the lesion was achieved without intraoperative complications. The patient evolved favorably in the postoperative period, without presenting an aggregate neurological deficit. Among the main advantages of robotic exoscopy are the best surgical

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Keywords

Subependymoma, minimally invasive surgery, robotic exoscope, intraventricular neoplasms

References

1. Kutluay U, Gregory CK, Mustafa KB. Operating microscopes: past, present, and future. Neurosurg Focus. 2009;27:E4. doi:10.3171/2009.6.FOCUS09120 DOI: https://doi.org/10.3171/2009.6.FOCUS09120

2. Garufi G, Conti A, Chaurasia B, Cardali SM. Exoscopic ver¬sus microscopic surgery in 5-ALA-guided resection of high- grade gliomas. J Clin Med. 2024;13(12):3493. doi:10.3390/ jcm13123493 DOI: https://doi.org/10.3390/jcm13123493

3. Fiani B, Jarrah R, Griepp DW, Adukuzhiyil J. The role of 3D exoscope systems in neurosurgery: an optical innovation. Cu- reus. 2021;13:e15878. DOI: https://doi.org/10.7759/cureus.15878

4. Hafez A, Haeren RHL, Dillmann J, Laakso A, Niemela M, Le- hecka M. Comparison of operating microscope and exoscope in a highly challenging experimental setting. World Neurosurg. 2021;147:e468-e475. DOI: https://doi.org/10.1016/j.wneu.2020.12.093

5. Montemurro N, Scerrati A, Ricciardi L, Trevisi G. The exoscope in neurosurgery: an overview of the current literature of intraope- rative use in brain and spine surgery. J Clin Med. 2021;11:223. DOI: https://doi.org/10.3390/jcm11010223

6. Herlan S, Marquardt JS, Hirt B, Tatagiba M, Ebner FH. 3D exos- cope system in neurosurgery: comparison of a standard ope- rating microscope with a new 3D exoscope in the cadaver lab. Oper Neurosurg (Hagerstown). 2019;17:518-524. doi:10.1093/ ons/opz081 DOI: https://doi.org/10.1093/ons/opz081

7. Louis DN, Ohgaki H, Wiestler OD, Cavenee WK. WHO classifi- cation of tumours of the central nervous system. 4th ed. Geneva: WHO Press; 2016.

8. Jain A, Amin AG, Jain P, et al. Subependymoma: clinical featu- res and surgical outcomes. Neurol Res. 2012;34(7):677-684. DOI: https://doi.org/10.1179/1743132812Y.0000000064

9. Ragel BT, Osborn AG, Whang K, Townsend JJ, Jensen RL, Couldwell WT. Subependymomas: an analysis of clinical and imaging features. Neurosurgery. 2006;58(5):881-890. DOI: https://doi.org/10.1227/01.NEU.0000209928.04532.09

10. Scheithauer BW. Symptomatic subependymoma: report of 21 cases with review of the literature. J Neurosurg. 1978;49(5):689- 696. DOI: https://doi.org/10.3171/jns.1978.49.5.0689

11. Koral K, Kedzierski R, Gimi B, Gomez A, Rollins N. Subepen- dymoma of the cerebellopontine angle and prepontine cistern in a 15-year-old adolescent boy. AJNR Am J Neuroradiol. 2008;29(1):190-191. DOI: https://doi.org/10.3174/ajnr.A0821

12. Sasagawa Y, Tanaka S, Kinoshita M, Nakada M. Endosco- pic and exoscopic surgery for brain tumors. Int J Clin Oncol. 2024;29(10):1399-1406. doi:10.1007/s10147-024-02529-9 DOI: https://doi.org/10.1007/s10147-024-02529-9

13. Yajargil MG. Microneurosurgery. Vol 1. Stuttgart: Thieme; 1984.

14. Apuzzo MLJ. Brain surgery: complication avoidance and mana- gement. New York: Churchill Livingstone; 1993.

15. Hernesniemi J, Leivo S. Management outcome in third ventricu- lar colloid cysts in a defined population: a series of 40 patients. Neurosurgery. 1996;38(2):307-313. DOI: https://doi.org/10.1016/0090-3019(95)00379-7

16. Pollock BE, Huston J. Natural history of asymptomatic colloid cysts of the third ventricle. J Neurosurg. 1999;91(3):364-369. DOI: https://doi.org/10.3171/jns.1999.91.3.0364

17. Rangel-Castilla L, Spetzler RF. The 6 pillars of modern neuro- surgery: the evolution of minimally invasive approaches. World Neurosurg. 2015;84(6):1774-1778.

18. Labib MA, Shah M, Kassam AB, et al. The safety and feasibility of image-guided tubular retractor systems for deep-seated brain lesions. Neurosurgery. 2017;80(3):417-426. DOI: https://doi.org/10.1227/NEU.0000000000001316

19. Ricciardi L, Chaichana KL, Cardia A, et al. The exoscope in neurosurgery: an innovative “point of view”. World Neurosurg. 2019;124:136-143. DOI: https://doi.org/10.1016/j.wneu.2018.12.202

20. Mamelak AN, Nobuto T, Berci G. Initial clinical experience with a high-definition exoscope system for microneurosurgery. Neu- rosurgery. 2010;67(2):476-483. DOI: https://doi.org/10.1227/01.NEU.0000372204.85227.BF

Section
Case Reports

How to Cite

Robotic exoscopy in intraventricular subependimoma: Case report and review. (2026). Revista Chilena De Neurocirugía, 51(3), 171-175. https://doi.org/10.36593/n5s1dn11