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Meningiomas confined to the optic canal and foramina
Abstract:
We present two cases, each with a small meningioma arising from the sheath of an optic nerve in the canal. Both cases demonstrate the paucity of clinical and radiographic signs occurring with these tumors. The diagnosis must be strongly suspected when a middle aged white woman slowly and progressively loses vision in one eye in the absence of remission or other neurological findings. We review similar cases reported in the literature that have been proven by biopsy.
Insights
This study highlights two cases of small optic nerve sheath meningiomas, emphasizing their subtle presentation. Early diagnosis is crucial for patients experiencing progressive vision loss without other neurological symptoms.
Area of Science:
- Neuro-oncology
- Ophthalmology
- Neurosurgery
Background:
- Meningiomas can arise from the optic nerve sheath, a rare occurrence.
- Optic nerve sheath meningiomas (ONSMs) present diagnostic challenges due to subtle clinical and radiographic signs.
Observation:
- Two cases of small ONSMs within the optic canal are presented.
- Patients exhibited slow, progressive, unilateral vision loss.
- Absence of remission or other neurological deficits was noted.
Findings:
- The study underscores the difficulty in diagnosing small ONSMs.
- Clinical presentation is often non-specific, requiring a high index of suspicion.
- Biopsy confirmed the diagnosis in reviewed literature cases.
Implications:
- Early suspicion and diagnosis of ONSMs are vital for preserving vision.
- Further research into diagnostic markers for subtle ONSMs is warranted.
- This highlights the importance of considering rare tumors in ophthalmology evaluations.