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Surgical Approaches for Brainstem Tumors in Pediatric Patients
Sergio Cavalheiro1, Marcos Devanir Silva da Costa1, Paloam Cardoso Novo1
1Department of Neurosurgery, Universidade Federal de Sao Paulo, Sao Paulo, Brazil.
Advances and Technical Standards in Neurosurgery
|July 2, 2026
Summary
This chapter details brainstem anatomy, proposing eight compartments and two new surgical entry zones. Enhanced understanding and techniques improve pediatric brain tumor resection outcomes.
Area of Science:
- Neurosurgery
- Pediatric Neurosurgery
- Neuroanatomy
Background:
- Brainstem tumors represent 12% of pediatric brain tumors.
- Understanding brainstem anatomy is crucial for surgical planning.
- Current surgical approaches have limitations.
Purpose of the Study:
- To provide a detailed anatomical description of the brainstem.
- To propose a novel compartmentalization of the brainstem.
- To introduce new surgical entry zones for improved lesion access.
Main Methods:
- Detailed review of intrinsic and extrinsic brainstem anatomy.
- Proposal of an eight-compartment anatomical redivision.
- Description of ten traditional and two novel surgical entry zones.
- Integration of microsurgical techniques, neurophysiological monitoring, and advanced imaging (MRI, tractography).
Main Results:
- A comprehensive anatomical map of the brainstem.
- A new framework of eight anatomical compartments.
- Two novel surgical entry zones: supratrigeminal and interpeduncular cerebellar routes.
- Demonstration of improved resection rates and reduced morbidity/mortality for brainstem lesions.
Conclusions:
- Refined anatomical knowledge and surgical techniques enhance brainstem lesion resection.
- Novel anatomical compartments and entry zones offer improved surgical access.
- Careful surgical trajectory selection is key to maximizing resection and minimizing functional deficits.
