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Skull metastasis from clear cell chondrosarcoma
Takayuki Kawano1, Jun-Ichiro Hamada, Motohiro Morioka
1Department of Neurosurgery, Kumamoto University Hospital.
Neurologia Medico-Chirurgica
|July 26, 2005
Summary
Clear cell chondrosarcoma (CCC) can metastasize to the skull base years after primary tumor resection. This rare, slow-growing cancer requires careful monitoring for distant spread, even after successful treatment.
Area of Science:
- Oncology
- Neurosurgery
- Pathology
Background:
- Clear cell chondrosarcoma (CCC) is a rare, low-grade bone malignancy.
- Distant metastasis from CCC is uncommon but can occur in the skull base.
Observation:
- A 67-year-old man presented with cranial nerve deficits and cerebellar dysfunction.
- Imaging revealed an osteolytic extradural mass in the posterior fossa.
- Bone scintigraphy confirmed a high-uptake lesion at the same site.
Findings:
- Histopathology confirmed metastatic CCC with clear cells, S-100, and vimentin expression.
- The metastatic tumor showed no malignant changes compared to the primary.
- Osteoclast-like giant cells were noted at the periphery.
Implications:
- This case highlights the potential for late skull base metastasis of CCC.
- Early detection through imaging and bone scintigraphy is crucial for metastatic CCC.
- Radical resection of the primary tumor does not preclude distant spread.