title: Ectopic external auditory canal and ossicular formation in the oculo-auriculo-vertebral spectrum.
abstract: Ear abnormalities in oculo-auricular-vertebral spectrum commonly present with varying degrees of external and middle ear atresias, usually in the expected locations of the temporal bone and associated soft tissues, without ectopia of the external auditory canal. We present the unique imaging of a 4-year-old girl with right hemifacial microsomia and ectopic location of an atretic external auditory canal, terminating in a hypoplastic temporomandibular joint containing bony structures with the appearance of auditory ossicles. This finding suggests an early embryological dysfunction involving Meckel's cartilage of the first branchial arch.
authors.affiliation: Department of Radiology, Indiana University School of Medicine, Indianapolis, IN, USA.
authors.forename: Nucharin
authors.initials: N
authors.lastname: Supakul
authors.forename: Stephen F
authors.initials: SF
authors.lastname: Kralik
authors.forename: Chang Y
authors.initials: CY
authors.lastname: Ho
mesh_terms: D002675:Child, Preschool; D004424:Ear Canal / Q000002:abnormalities / Q000000981:diagnostic imaging; D004429:Ear Ossicles / Q000002:abnormalities / Q000000981:diagnostic imaging; D004432:Ear, Middle / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D005260:Female; D006053:Goldenhar Syndrome / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D013704:Temporomandibular Joint / Q000002:abnormalities / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed