title: Diagnostic imaging of posterior fossa anomalies in the fetus and neonate: part 1, normal anatomy and classification of anomalies.
abstract: This article is the first portion of a two-part review that illustrates the normal appearance of the cerebellum and posterior fossa on prenatal ultrasound and MRI and on postnatal diagnostic imaging studies. Classification and terminology of posterior fossa abnormalities in the literature are confusing due to evolution of concepts and sometimes lack of consensus. Accurate classification of posterior fossa anomalies is important for predicting fetal outcome and for appropriate counseling. In Part 1 of this review, prenatal and postnatal imaging techniques for assessing the posterior fossa will be discussed, followed by a discussion of how cerebellar malformations may be classified.
authors.affiliation: Department of Radiology, Seattle Children's Hospital, MA.7.220, 4800 Sand Point Way NE, Seattle, WA, 98105; Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA, 98195-7117. Electronic address: teresa.chapman@seattlechildrens.org.
authors.forename: Teresa
authors.initials: T
authors.lastname: Chapman
authors.affiliation: Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA, 98195-7117.
authors.forename: Sowmya
authors.initials: S
authors.lastname: Mahalingam
authors.affiliation: Department of Radiology, Seattle Children's Hospital, MA.7.220, 4800 Sand Point Way NE, Seattle, WA, 98105; Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA, 98195-7117.
authors.forename: Gisele E
authors.initials: GE
authors.lastname: Ishak
authors.affiliation: Department of Radiology, Seattle Children's Hospital, MA.7.220, 4800 Sand Point Way NE, Seattle, WA, 98105; Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA, 98195-7117.
authors.forename: Jason N
authors.initials: JN
authors.lastname: Nixon
authors.affiliation: Department of Pathology, Seattle Children's Hospital, PC.8.720, 4800 Sand Point Way NE, Seattle, WA, 98105.
authors.forename: Joseph
authors.initials: J
authors.lastname: Siebert
authors.affiliation: Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA, 98195-7117.
authors.forename: Manjiri K
authors.initials: MK
authors.lastname: Dighe
mesh_terms: D002531:Cerebellum / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology; D003388:Cranial Fossa, Posterior / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging; D009421:Nervous System Malformations / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011379:Prognosis; D016216:Ultrasonography, Prenatal
keywords: Congenital; Fetal MRI; Pediatric; Posterior fossa; Prenatal