Cystic Malformations Within the Posterior Fossa

Andrea Poretti, Thangamadhan Bosemani

Research output: Contribution to journalReview articlepeer-review

2 Scopus citations


Cystic malformations within the posterior fossa are rather common findings in pediatric neuroimaging. They may be divided in two main groups based on their location and size: large extra-cerebellar and small intra-cerebellar cystic malformations. Both groups include various diseases: Dandy–Walker malformation, Blake’s pouch cyst, posterior fossa arachnoid cysts, and mega cisterna magna are extra-cerebellar posterior fossa cystic malformations, while α-dystroglycanopathies, GPR56-related fronto-parietal polymicrogyria, and Poretti–Boltshauser due to LAMA1 mutations are intra-cerebellar posterior fossa cystic malformations. These diseases may be differentiated based on the neuroimaging pattern. Differentiation between the various diseases associated with extra- and intra-cerebellar cystic malformations is important in terms of diagnosis, management, prognosis, and counseling of the affected families.

Original languageEnglish (US)
Article number17
Pages (from-to)1-11
Number of pages11
JournalCurrent Radiology Reports
Issue number4
StatePublished - Apr 1 2016


  • Cerebellum
  • Children
  • Cysts
  • Malformation
  • Neuroimaging
  • Posterior fossa

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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