title: Pontine Tegmental Cap Dysplasia: MR Evaluation of Vestibulocochlear Neuropathy.
abstract: Pontine tegmental cap dysplasia (PTCD) is recently recognized as a rare congenital brain stem malformation with typical neuroimaging hallmarks of ventral pontine hypoplasia and vaulted pontine tegmentum projecting into the fourth ventricle. PTCD patients also demonstrate variable cranial neuropathy with predilection for involvement of the vestibulocochlear and facial nerves. We present a case of PTCD diagnosed on MRI in the neonatal period. During early infancy, the patient displayed features of multiple cranial neuropathies and bilateral hearing loss. At the age of 2, the patient underwent further MRI assessment with dedicated high resolution T2 SPACE sequence to delineate the cranial nerve deficiencies.
authors.affiliation: Department of Medical Imaging, The Townsville Hospital, Douglas, Queensland, Australia.
authors.forename: Dalveer
authors.initials: D
authors.lastname: Singh
authors.affiliation: Department of Medical Imaging, The Townsville Hospital, Douglas, Queensland, Australia.
authors.forename: Charlie Chia-Tsong
authors.initials: CC
authors.lastname: Hsu
authors.affiliation: Department of Medical Imaging, The Townsville Hospital, Douglas, Queensland, Australia.
authors.forename: Gigi Nga Chi
authors.initials: GN
authors.lastname: Kwan
authors.affiliation: Department of Medical Imaging, The Townsville Hospital, Douglas, Queensland, Australia.
authors.forename: Ipeson
authors.initials: I
authors.lastname: Korah
mesh_terms: D002675:Child, Preschool; D003389:Cranial Nerve Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D006312:Hearing Loss, Bilateral / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D008297:Male; D009421:Nervous System Malformations / Q000150:complications / Q000000981:diagnostic imaging*; D065821:Pontine Tegmentum / Q000002:abnormalities / Q000000981:diagnostic imaging*; D000159:Vestibulocochlear Nerve / Q000002:abnormalities / Q000000981:diagnostic imaging*
keywords: Pontine cap tegmental dysplasia; vestibulocochlear nerve