Rolandic Anatomy
Chiasmatic Sulcus
AI-powered interactive skeletal anatomy for medical and surgical education
A groove on the sphenoid bone just anterior to the sella turcica. While the optic chiasm actually sits slightly above it, tumors in this region (like craniopharyngiomas) typically cause "bitemporal hemianopsia" (loss of peripheral vision).
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Educational content only. Not medical advice. For clinical decisions, consult authoritative sources and qualified clinicians.