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Other Less Prevalent Tumors of the Central Nervous System
Jody Filippo Capitanio1, Pietro Mortini2
1Department of Neurosurgery and Gamma Knife Radiosurgery, IRCCS Ospedale San Raffaele and Vita-Salute San Raffaele University, Milan, Italy.
Abstract:
The presented tumors in this chapter are somewhat very rare, and their management is still debated due to the scarcity of information about their cell of origin, behavior, and biology. Treatment options are still limited, but we are confident that in the near future by discovering the genetic and biological mechanisms that drive tumor growth we will be able to offer new target therapies that should be flanked by surgery, radiotherapy, and chemotherapeutic agents actually in use. The purpose of this chapter is to highlight the most important known characteristics of these tumors offering the chance to recognize the disease and then offer the best opportunity for treatment to patients. The 5th WHO Classification Central Nervous System features substantial changes by moving further to advance the role of molecular diagnostics in CNS tumor classification, but remaining rooted in other established approaches to tumor characterization, including histology and immunohistochemistry, and probably, the category of many tumors will change. Here, the most important characteristics of each neoplasm are summarized focusing on genetic mechanisms and molecular pathways, their histopathologic footprints, signs and symptoms, radiologic features, therapeutic approaches, and prognosis as well as follow-up protocols. Schematic classifications are also presented to offer a better understanding of the pathology.
Insights
This chapter details rare central nervous system (CNS) tumors, emphasizing the need for better understanding of their biology for improved targeted therapies. It covers their characteristics, diagnosis, and treatment, incorporating the latest WHO classification updates.
Area of Science:
- Neuro-oncology
- Pathology
- Genetics
Background:
- Rare central nervous system (CNS) tumors present diagnostic and therapeutic challenges due to limited data on their origin, behavior, and biology.
- Current treatment options are constrained, highlighting the need for advanced understanding to develop novel therapies.
Purpose of the Study:
- To elucidate key characteristics of rare CNS tumors, aiding in disease recognition and optimizing patient treatment strategies.
- To provide a comprehensive overview integrating the latest advancements in CNS tumor classification, including molecular diagnostics.
Main Methods:
- Summarization of essential features for each neoplasm, including genetic mechanisms, molecular pathways, and histopathologic findings.
- Integration of clinical information such as signs, symptoms, radiologic features, and therapeutic approaches.
- Inclusion of prognostic indicators and follow-up protocols, supported by schematic classifications.
Main Results:
- The 5th WHO Classification of CNS Tumors marks a significant shift towards molecular diagnostics while retaining traditional methods like histology and immunohistochemistry.
- Detailed summaries of rare CNS neoplasms cover their genetic underpinnings, biological behavior, clinical presentation, and management strategies.
- Updated classifications are expected to refine the categorization of many CNS tumors.
Conclusions:
- Enhanced understanding of the genetic and biological drivers of CNS tumors is crucial for developing future targeted therapies.
- A comprehensive approach combining molecular data with established diagnostic methods is essential for accurate classification and effective management of rare CNS tumors.
- This chapter serves as a vital resource for clinicians and researchers, improving the diagnosis and treatment of rare CNS neoplasms.
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