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Pediatric Pineal Region Tumors: Special Reference to Posterior Interhemispheric Trans-Tentorial Approach
1Division of Pediatric Neurosurgery, Ann & Robert Lurie Children's Hospital of Chicago, Chicago, IL, USA. ttomita@luriechildrens.org.
Advances and Technical Standards in Neurosurgery
|September 28, 2023
Summary
Pediatric pineal region tumors, including germ cell tumors and gliomas, often cause obstructive hydrocephalus. Surgical resection is challenging, with posterior interhemispheric transtentorial approaches offering specific advantages for tumor removal.
Area of Science:
- Pediatric neurosurgery
- Pediatric neuro-oncology
- Neurosurgical oncology
Background:
- Pineal region tumors in children originate from the pineal gland (germ cell tumors, pineal parenchymal tumors) or surrounding structures (gliomas).
- Obstructive hydrocephalus is a common presenting symptom, necessitating cerebrospinal fluid (CSF) diversion, often via endoscopic third ventriculostomy.
- Accurate diagnosis requires advanced imaging and histological confirmation, as treatment paradigms vary significantly by tumor type.
Purpose of the Study:
- To review the classification and management of pediatric pineal region tumors.
- To discuss the challenges associated with surgical resection of these deep-seated tumors.
- To present surgical techniques for tumor removal using a posterior interhemispheric transtentorial approach.
Main Methods:
- Review of pediatric pineal region tumor types, including germ cell tumors and gliomas.
- Discussion of diagnostic imaging and hydrocephalus management.
- Comparison of occipital transtentorial (OT) and infratentorial supracerebellar (ITSC) surgical approaches.
- Detailed presentation of the posterior interhemispheric transtentorial surgical technique.
Main Results:
- Pineal region tumors present diagnostic and therapeutic challenges due to location and histology.
- Endoscopic third ventriculostomy is a primary method for managing hydrocephalus.
- The posterior interhemispheric transtentorial approach provides specific advantages for surgical resection, balancing exposure and potential risks.
Conclusions:
- Effective management of pediatric pineal region tumors requires accurate diagnosis and tailored treatment strategies.
- Surgical resection, while challenging, can be optimized through careful approach selection and technique.
- The posterior interhemispheric transtentorial approach is a valuable technique for accessing and resecting these complex tumors.
