Intraorbital Meningiomas: A Histopahologic Study
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2015, Vol 3, Issue 2
Abstract
Optic Nerve Sheath Meningiomas account for about 4% of all intraorbital masses. They include both primary and secondary orbital meningiomas. Primary meningiomas arise from the cells lining the intraorbital or intracanalicular segments of the optic nerve. Secondary orbital meningiomas arise from the sphenoid wing or suprasellar region and infiltrate the orbit. Most of the orbital meningiomas are secondary. We did a retrospective study of orbital meningiomas encountered at our Institute over a period of seven years from 2008 to 2014. Eight cases of orbital meningiomas were reported during the study period, of which seven (87.5%) were secondary in origin. Six cases (75.6%) occurred in adult female patients. A single case was reported in a nine year old male patient. Clinically most of the patients presented with proptosis. Bone invasion was seen in two cases on CT scan. Histologically, meningothelial type was the commonest. The current WHO criteria (2007) has been applied to these tumors and graded accordingly. The WHO criteria for grading atypical meningiomas and the prognosis of intraorbitalmeningiomas are discussed. Keywords: Meningioma, Intraorbital, Secondary, Histology, WHO grading, Prognosis
Authors and Affiliations
Kavitha Toopalli, Sailaja Vallury, Modini Pandharpurkar, Mohammed Ather
Keywords
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