Primary Osteosarcoma of the Skull

ABSTRACT

Osteosarcoma is the most frequently encountered primary malignant tumor of the bone. But sarcoma of the skull are rare tumor to be observed even in an extensive neuropathological practice. We presents a case of skull neoplasm identified as osteosarcoma. A twelve year old male patient was admitted to our department because of the large palpable mass on the posterior parietal and occipital region with headache, nausea and vomiting. On admission moderate papilledema was noted in the both eyes. Other neurologic finding were within normal limits. Chest film and long bone series showed no evidence of abnormality. Skull films revealed a large round destructive area on the posterior parietal and occipital region and the right carotid angiogram revealed patch densities in the mass lesion which was supplied by the right occipital artery and possibly the right middle meningeal artery. Serum Alkaline Phosphatase was 14 BL Units. The findings on the pathology side was compatible with osteosarcoma.