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Unilateral megalencephaly in association with Dandy-Walker complex

J R Parikh1, K Mak, K M Shalay

  • 1Department of Radiology, Kingston General Hospital, Queen's University, Ont.

Canadian Association of Radiologists Journal = Journal L'Association Canadienne Des Radiologistes
|October 1, 1994
PubMed
Summary

Unilateral megalencephaly, a rare congenital anomaly, can be associated with Dandy-Walker complex. Computed tomography is a viable imaging option when magnetic resonance imaging is unavailable.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Medical Imaging

Background:

  • Unilateral megalencephaly is a rare congenital brain malformation characterized by asymmetric overgrowth of one cerebral hemisphere.
  • The Dandy-Walker complex is a spectrum of congenital posterior fossa malformations.
  • Understanding the embryonic pathogenesis of these conditions is crucial for diagnosis and management.

Observation:

  • This report details a rare case of unilateral megalencephaly occurring concurrently with the Dandy-Walker complex.
  • The study discusses the potential embryonic developmental pathways leading to both conditions.

Findings:

  • The co-occurrence of unilateral megalencephaly and Dandy-Walker complex, while rare, presents a unique diagnostic challenge.
  • Embryonic pathogenesis provides insight into the simultaneous development of these distinct neurological anomalies.

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Implications:

  • Computed tomography (CT) serves as a practical alternative for documenting these abnormalities when magnetic resonance imaging (MRI) is not accessible.
  • This case highlights the importance of considering complex congenital anomalies in neurodevelopmental assessments.
  • Further research into the shared embryonic origins may reveal novel therapeutic targets.