title: Sinus pericranii with a hair collar sign.
abstract: Sinus pericranii is a rare vascular malformation in which the extracranial veins are connected to the intracranial venous circulation. It typically appears as a soft mass with a blue hue on the scalp. We describe a patient with sinus pericranii and associated hair collar sign.
authors.affiliation: Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts.
authors.forename: Nikoo
authors.initials: N
authors.lastname: Cheraghi
authors.forename: Sophia
authors.initials: S
authors.lastname: Delano
authors.forename: Courtney
authors.initials: C
authors.lastname: Csikesz
authors.forename: Sathish
authors.initials: S
authors.lastname: Dundamadappa
authors.forename: Karen
authors.initials: K
authors.lastname: Wiss
mesh_terms: D006197:Hair / Q000002:abnormalities*; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D012535:Scalp / Q000098:blood supply* / Q000473:pathology*; D020779:Sinus Pericranii / Q000473:pathology*; D014680:Veins / Q000002:abnormalities*