Cerebellar hypoplasias.

Authors

  • Marta Maia Safronova Serviço de Neurorradiologia, Hospital Pedro Hispano, Matosinhos.
  • Clara Barbot
  • Jorge Resende Pereira

DOI:

https://doi.org/10.20344/amp.717

Abstract

Cerebellar hypoplasias are cerebellar malformations with small but completely formed cerebellum. They can be divided in focal and in diffuse or generalized. It is sometimes difficult to make distinction between cerebellar atrophy (progressive condition) and hipoplasia (not progressive condition). Focal hypoplasias are restricted to one cerebellar hemisphere or to the vermis. Diffuse hypoplasias refer to both cerebellar hemispheres and vermis. If there is associated IVth ventricle enlargement, hypoplasias occur in the context of Dandy-Walker complex, a continuum of posterior fossa cystic anomalies. A revision of cerebellar hypoplasias and associated pathology is done, illustrated with 22 cases tha include focal and diffuse cerebellar hypoplasias, Dandy-Walker malformations and its variant, persistent Blake's pouch cyst, megacisterna magna, PEHO síndrome (progressive encephalopathy with oedema, hipsarrhythmia and optic atrophy), Joubert syndrome, congenital disorder of glycosylation type Ia, pontocerebellar hipoplasias Barth type I and II, diffuse subcortical heterotopia. The imaging finding of structural cerebellar anomalies frequently leads to diagnostic incertainty as the anomalies are mostly unspecific, implying an extenuating analytical and genetic workup. Their knowledge and classification may be useful to decide the patient adjusted laboratorial workup.

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How to Cite

1.
Safronova MM, Barbot C, Resende Pereira J. Cerebellar hypoplasias. Acta Med Port [Internet]. 2010 Oct. 22 [cited 2024 Mar. 28];23(5):841-52. Available from: https://actamedicaportuguesa.com/revista/index.php/amp/article/view/717

Issue

Section

Arquivo Histórico