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Pineal and nonpineal supratentorial primitive neuroectodermal tumors.
1Children's Hospital of Pittsburgh, 3520 Fifth Avenue, Suite 205, Pittsburgh, PA 15213, USA. jakackr@chplink.chp.edu
Summary
Multimodality therapy significantly improves survival for pineal primitive neuroectodermal tumors (SPNETs). However, nonpineal SPNETs still have a poor prognosis, though infants may survive with aggressive treatment.
Area of Science:
- Pediatric Oncology
- Neuro-oncology
- Tumor Biology
Background:
- Supratentorial primitive neuroectodermal tumors (SPNETs), including pineoblastomas, are rare and historically had poor prognoses.
- Multimodality therapy has improved outcomes for pineal SPNETs, but nonpineal SPNETs remain challenging.
Purpose of the Study:
- To provide an overview of the natural history, prognostic factors, and treatment strategies for pineal and nonpineal SPNETs.
- To highlight the impact of multimodality therapy on survival rates for different SPNET subtypes.
Main Methods:
- Review of existing literature on pineal and nonpineal SPNETs.
- Analysis of treatment outcomes based on tumor location and therapeutic interventions.
Main Results:
- Multimodality therapy, including surgery, radiation, and chemotherapy, has significantly improved survival for pineal SPNETs.
- Chemotherapy alone is insufficient for young children with pineoblastomas, leading to rapid progression.
- Survival for nonpineal SPNETs remains around 30-35% despite aggressive treatment.
- Infants with nonpineal SPNETs may achieve long-term survival with gross total resection and chemotherapy.
Conclusions:
- Treatment advancements have improved outcomes for pineal SPNETs.
- Nonpineal SPNETs present a significant therapeutic challenge, particularly in older children.
- Tailored treatment approaches considering tumor location and patient age are crucial for optimizing SPNET management.