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Optimizing craniospinal radiotherapy delivery in a pediatric patient affected by supratentorial PNET: a case report
Maurizio Mascarin1, Annalisa Drigo, Andrea Dassie
1Pediatric Radiotherapy Unit, Centro di Riferimento [corrected] Oncologico, National Cancer Institute, Aviano (PN), Italy. mascarin@cro.it
Insights
New advances in pediatric radiation therapy offer better precision. This study details craniospinal tomotherapy for a child with a primitive neuroectodermal tumor, highlighting its potential benefits and careful considerations for critical cases.
Area of Science:
- Pediatric Oncology
- Radiation Oncology
- Medical Physics
Background:
- Advances in radiation therapy enhance precision and reduce toxicity in pediatric cancer treatment.
- Craniospinal irradiation is a complex treatment modality for pediatric central nervous system tumors.
Observation:
- A 4-year-old child with a supratentorial primitive neuroectodermal tumor was treated with craniospinal tomotherapy post-surgery.
- The tomotherapy plan was evaluated against conventional craniospinal irradiation, 3D conformal radiation therapy, and intensity-modulated radiation therapy.
Findings:
- Tomotherapy demonstrated potential for increased conformability and reduced radiation doses to non-target tissues.
- Careful consideration of tomotherapy's disadvantages, including organ-at-risk dose, planning complexity, and anesthesia requirements, is crucial.
Implications:
- Tomotherapy represents a selective, advanced option for specific pediatric radiotherapy cases.
- This technique requires careful case selection and planning to maximize benefits while mitigating risks in pediatric oncology.
Abstract:
New advances in radiation therapy for children allow increased conformability and reduced doses to non-target tissues. We report our experience in treating a 4-year-old child with craniospinal tomotherapy after surgery of the primary tumor, a supratentorial primitive neuroectodermal tumor. The tomotherapy plan was compared with conventional craniospinal irradiation, 3D conformal radiation therapy, and intensity-modulated radiation therapy plans. The possible disadvantages of tomotherapy related to the radiation dose to organs at risk, treatment planning, and anesthesia should be carefully considered as the use of the technique is not suggested in a general manner, but selectively, in critical pediatric radiotherapy cases.
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