Zespół tętniczo-żylnej metamerii mózgowo-twarzowej typu 1

A rare subtype of cerebrofacial arteriovenous metameric syndrome characterized by unilateral arteriovenous malformations involving the hypothalamus and nasal region (medial prosencephalic group). The condition manifests in childhood. Common presenting signs and symptoms are progressive neurological deficit, hemorrhage, and cosmetic complaints like facial asymmetry.