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Primitive neuroectodermal tumor after radiation therapy for craniopharyngioma
Michael Chan1, Sebastian R Herrera, Sergey Neckrysh
1Department of Neurosurgery, University of Illinois at Chicago, Illinois 60612, USA. mchan7@uic.edu
Neurosurgical Focus
|January 4, 2011
Summary
Radiation therapy for craniopharyngioma can induce secondary primitive neuroectodermal tumors. This case highlights the importance of discussing radiation risks with patients and neurosurgeons due to potential secondary CNS neoplasms.
Area of Science:
- Neuro-oncology
- Radiation Oncology
- Pathology
Background:
- Craniopharyngioma is a common brain tumor, often treated with surgery and radiation therapy.
- Radiation therapy is effective in reducing recurrence rates for subtotally resected craniopharyngioma.
- Secondary neoplasms are a known risk associated with radiation treatment.
Observation:
- A case report of an African-American male treated for craniopharyngioma in childhood.
- The patient developed a primitive neuroectodermal tumor (PNET) 8 years after radiation therapy.
- The PNET presented as a basal ganglia mass, causing facial droop and hemiparesis.
Findings:
- Histopathological examination confirmed the diagnosis of primitive neuroectodermal tumor.
- This represents a rare instance of radiation-induced central nervous system (CNS) neoplasm.
- The tumor developed in the radiation field of the initial craniopharyngioma treatment.
Implications:
- This case expands the spectrum of radiation-induced neoplasms in the CNS.
- It underscores the critical need for informed consent regarding radiation therapy risks.
- Neurosurgeons and patients must be aware of the potential for secondary CNS tumors following radiation treatment.
