Herniated gyrus rectus causing idiopathic compression of the optic chiasm

Area of Science:

• Neurology
• Neuroanatomy
• Ophthalmology

Background:

• Frontal lobe anomalies can impact visual pathways.
• The gyrus rectus is anatomically positioned above the optic chiasm and nerves.
• Compression of these visual structures is typically due to tumors or developmental abnormalities.

Observation:

• This report details an unusual instance of a herniated gyrus rectus.
• The herniation directly impinged upon the optic chiasm and optic nerve.

Findings:

• The herniated gyrus rectus caused compression of the optic chiasm and nerve.
• No definitive pathological cause, such as neoplastic or dysplastic growth, was identified for the herniation.

Implications:

• Highlights a rare cause of optic pathway compression.
• Underscores the importance of considering structural anomalies in unexplained visual dysfunction.
• May inform diagnostic approaches for visual field defects originating from the anterior cranial fossa.