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Journal of Korean Neurosurgical Society 1999;28(1): 123-129. |
| Primitive Neroectodermal Tumor in the Cauda Equina Region. |
| Jeong Man Lee, Bong Arm Rhee, Jong Tae Park, Young Jin Lim, Tae Sung Kim, Won Leem, Gook Ki Kim |
| Department of Neurosurgery, School of Medicine, Kyung Hee University, Seoul, Korea. |
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| ABSTRACT |
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We report a malignant peripheral primitive neuroectodermal tumor (PNET) that originated in the cauda equina in a young adult, After gross total excision of the tumor, radiotheraphy was followed. The tumor had the typical appearance of a PNET with small, round cell. It stained positively for the neuron-specific enolase(NSE) conforming its neural origin and negatively for cytokeratin, glial fibrillary acidic protein(GFAP ) and S-100 protein. Three months later, MRI showed almost total obstruction at the level o f the L/L interspace caused by a mass occupying the spinal canal and extending into the L/S foramen on the right. Sixteen months after commencement of radiotherapy, severe left sciatica developed and MRI showed involvement of the both ilii and right femur with a large soft tissue mass extending into the pelvis. Palliative radiotherapy was administered but the patient died four months later. |
| Key Words:
Primitive neuroectodermal tumor(PNET); Cauda equina; Peripheral |
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