Brain tumour- meningioma
Mdm. R is a 60 yrs. old female who was complaining blurring of vision on the right eye. She taught it was part of aging, cataract and etc. so she just ignored it. After a few months, her symptoms increased rapidly.
Her regular GP referred her to an ophthalmologist. Soon later an MRI brain was done as her eye checkup didn't lead to any significant changes. A huge meningioma was found in the brain compressing the optic chiasm causing the blurring of vision. It was deemed too risky for an operation as it could lead to blindness from the injury to the optic chiasm.
She was discussed in our regular MDT (multidisciplinary team meeting) and was subjected to Gamma Knife (GK). It was a tough case as we needed to balance for a good tumor control vs radiating the optic chiasm. She completed her GK treatment uneventful with 1 night hospital stay.
Optic nerve meningiomas are uncommon, benign neoplasms originating from the meningothelial cells of the meninges surrounding the optic nerve. Although considered benign tumors, it causes slow, progressive vision loss secondary to compression of the adjacent optic nerve and its blood supply.
GK has the steepest dose fall-off across all radiotherapy modalities, and thus when the tumor is close to the optic nerve, the adverse radiation effects could be minimized.
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