|Year : 1989 | Volume
| Issue : 3 | Page : 152-153
Intracranial extension of orbital meningioma-A case report
Madhumati Misra, Amar Bikram Mohanti, Sanatan Rath
Neuro-opthomology. Section, Dept. Ophthalmology SCB Medical College, Cuttack - 753007, India
Neuro-opthomology. Section, Dept. Ophthalmology SCB Medical College, Cuttack - 753007
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Misra M, Mohanti AB, Rath S. Intracranial extension of orbital meningioma-A case report. Indian J Ophthalmol 1989;37:152-3
|How to cite this URL:|
Misra M, Mohanti AB, Rath S. Intracranial extension of orbital meningioma-A case report. Indian J Ophthalmol [serial online] 1989 [cited 2020 Jan 28];37:152-3. Available from: http://www.ijo.in/text.asp?1989/37/3/152/26062
| Introduction|| |
Primary orbital meningiomas are rare and arise from the optic nerve sheath ,,. Intracranial meningioma from the sphenoidal wing or tuberculum sellae commonly invade the orbit. Cranial extension of a primary orbital meningioma is extremely rare and has not yet been reported. In the present case, a primary orbital meningioma was decompressed via frontal craniotomy and excision of the orbital roof. Subsequently, intracranial extension of the orbital meningioma occurred through the excised orbital roof and presented diagnostic difficulty. Rarity of this case prompted this case report.
| Case report|| |
KD, a 30 year old female presented in the neuro-ophthalmic section, of SCB Medical College Hospital, Cuttack in august,1986 with left axial proptosis. Orbital computed tomographic (CT) scan showed a left retrobulbar space occupying lesion engulfing the optic nerve. The left eye had 6/24 and right eye 6/6 vision with normal optic fundi. Left frontal craniotomy was done and the tumour was removed after excision of the left orbital roof. Biopsy of the tumour showed meningioma.
She was readmitted in August,1987 for reappearance of left proptosis, headache, vomiting, papilloedema, and right hemiparesis [Figure - 1] CT scan demonstrated subfrontal extension of the orbital meningioma through the excised orbital roof. Left cerebral angiography showed intracranial extension of the orbital mass [Figure - 2]. The frontal and orbital tumours could be removed in one sitting through a left frontal craniotomy and orbital roof reconstruction with fascia lata was done. Proptosis regressed and features of intracranial extension disappeared after surgery.
| Discussion|| |
Meningiomas account for 6 to 17 percent of diseases producing proptosis of the eye  This tumour is frequent in the fourth and fifth decades but primary orbital meningiomas are found in the first and second decade ,,. There is greater preponderance in females, in the order 2 :1.
Meningiomas arise from the arachnoid cell caps over the arachnoid villi ,,,.. Primary orbital meningiomas are rare and arise from the dural lining of the optic nerve. They may arise from the perineurium of the orbital peripheral nerves ,.
Intracranial meningiomas of the greater and lesser wing of the sphenoid cause proptosis by direct encroachment on the orbital cavity, by reactive hyperostosis of the inner orbital wall or by interfering with venous or lymphatic drainage . Classical optic nerve meningiomas present proptosis without ophthalmoplegia, visual failure, optic atrophy or papilloedema 
In the present case, cranial extension of the orbital meningioma occurred through the previously surgically excised orbital roof and was demonstrated by CT scan. Timely surgery saved the life.
| References|| |
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[Figure - 1], [Figure - 2]