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Updated: May 17, 2026
08:57
Identifying, Diagnosing, and Grading Malignant Peripheral Nerve Sheath Tumors in Genetically Engineered Mouse Models
Published on: May 17, 2024
Peripheral primitive neuroectodermal tumor of the cervical spine
Gustavo A P S Cabral1, Cristian F Nunes, José O Melo
1Department of Neurosurgery, Galeão Air Force Hospital, Rio de Janeiro, Brazil.
Surgical Neurology International
|October 11, 2012
Summary
Primitive neuroectodermal tumors (PNETs) are rare, aggressive neoplasms. This case highlights the challenges in diagnosing and treating peripheral PNET (pPNET) of the cervical spine, emphasizing the need for multimodal therapy and early detection.
Area of Science:
- Neuro-oncology
- Surgical Pathology
Background:
- Primitive neuroectodermal tumor (PNET) is a malignant neoplasm originating from neural crest cells, sharing features with Ewing's sarcoma.
- Peripheral PNET (pPNET) is a rare subtype, typically affecting young adults.
Observation:
- A 22-year-old woman presented with progressive neck pain, arm paresthesia, and a palpable cervical mass.
- Neurological examination revealed upper motor neuron signs and hemi-hypoesthesia.
- Neuroimaging demonstrated a cervical lesion extending into neural foramina.
Findings:
- Surgical resection followed by adjuvant radiotherapy and chemotherapy was initially successful.
- Despite initial recovery, the patient later developed hydrocephalus with cerebrospinal fluid positive for neoplastic cells.
- Histopathological and immunohistochemical analysis confirmed pPNET.
Implications:
- Multimodal treatment, including surgery, radiotherapy, and chemotherapy, shows promise for pPNET management.
- Accurate diagnosis relies on immunohistochemical identification of neuronal differentiation markers.
- pPNET remains a challenging diagnosis with a generally poor prognosis, necessitating ongoing research into effective therapeutic strategies.
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