Diagnostic imaging of posterior fossa anomalies in the fetus and neonate: part 2, Posterior fossa disorders

Teresa Chapman; Sowmya Mahalingam; Gisele E Ishak; Jason N Nixon; Joseph Siebert; Manjiri K Dighe

doi:10.1016/j.clinimag.2014.10.012

Diagnostic imaging of posterior fossa anomalies in the fetus and neonate: part 2, Posterior fossa disorders

Clin Imaging. 2015 Mar-Apr;39(2):167-75. doi: 10.1016/j.clinimag.2014.10.012. Epub 2014 Oct 22.

Authors

Teresa Chapman¹, Sowmya Mahalingam², Gisele E Ishak³, Jason N Nixon³, Joseph Siebert⁴, Manjiri K Dighe²

Affiliations

¹ 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.
² Department of Radiology, University of Washington Medical Center, Box 357115, 1959 NE Pacific Street, Seattle, WA 98195-7117.
³ 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.
⁴ Department of Pathology, Seattle Children's Hospital, PC.8.720, 4800 Sand Point Way NE, Seattle, WA, 98105.

PMID: 25457569
DOI: 10.1016/j.clinimag.2014.10.012

Abstract

This second portion of a two-part review illustrates examples of posterior fossa disorders detectable on prenatal ultrasound and MRI, with postnatal or pathology correlation where available. These disorders are discussed in the context of an anatomic classification scheme described in Part 1 of this posterior fossa anomaly review. Assessment of the size and formation of the cerebellar hemispheres and vermis is critical. Diagnoses discussed here include arachnoid cyst, Blake's pouch cyst, Dandy-Walker malformation, vermian agenesis, Joubert syndrome, rhombencephalosynapsis, Chiari II malformation, ischemia, and tumors.

Keywords: Cerebellum; Congenital brain malformation; Posterior fossa; Prenatal imaging.

Publication types

Review

MeSH terms

Brain Diseases / diagnosis*
Brain Diseases / diagnostic imaging
Brain Diseases / pathology
Cerebellum / diagnostic imaging
Cerebellum / pathology
Cranial Fossa, Posterior / diagnostic imaging*
Cranial Fossa, Posterior / pathology*
Humans
Infant, Newborn
Magnetic Resonance Imaging / methods
Prenatal Diagnosis
Ultrasonography