Neuroectodermal Tumor Evaluation
The evaluation of primitive neuroectodermal tumors begins with a history and physical examination.
Physical findings may help to identify the location of the tumor in the brain.
Physical findings in someone with a primitive neuroectodermal tumor may include:
- Weakness on one side of the body:
- Numbness on one side of the body:
- Difficulty swallowing
- Difficulty walking
- Difficulty with balance
- Difficulty speaking
- Facial weakness:
- Facial drooping
- Loss of coordination
- Memory loss
- Vision changes:
Tests are necessary to make the diagnosis of a primitive neuroectodermal tumor.
Tests that may be used to evaluate primitive neuroectodermal tumors include:
Neuroectodermal Tumor Biopsy
A brain biopsy is necessary to confirm the diagnosis of primitive neuroectodermal tumor.
During a brain biopsy, a neurosurgeon removes a small sample of brain tissue through a small hole in the skull. The tissue is then examined under a microscope, in order to determine the type of cells causing the cancer.
Continue to Neuroectodermal Tumor Treatment
- Jakacki RI. Treatment strategies for high-risk medulloblastoma and supratentorial primitive neuroectodermal tumors. Review of the literature. J Neurosurg. 2005 Jan;102(1 Suppl):44-52. 
- McLean TW. Medulloblastomas and central nervous system primitive neuroectodermal tumors. Curr Treat Options Oncol. 2003 Dec;4(6):499-508. 
- Vogel H, Fuller GN. Primitive neuroectodermal tumors, embryonal tumors, and other small cell and poorly differentiated malignant neoplasms of the central and peripheral nervous systems. Ann Diagn Pathol. 2003 Dec;7(6):387-98.