Dyke-Davidoff-Masson syndrome (CT)

Case contributed by A.Prof Frank Gaillard

Right cerebral hemiatrophy and enlargement of right frontal sinus.

Case Discussion

Dyke-Davidoff-Masson syndrome (DDMS) was initially described as changes in the skull seen on skull X-ray in patients with cerebral hemiatrophy, but is now applied more broadly to cross-sectional imaging also. It is characterised by:

  • thickening of the skull vault (compensatory)
  • enlargement of the frontal sinus (also ethmoidal and mastoid air-cells)
  • elevation of the petrous ridge
  • ipsilateral falcine displacement
  • Capillary malformations(are a novel finding for children with Dyke-Davidoff-Masson syndrome)
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Case information

rID: 2603
Case created: 7th May 2008
Last edited: 8th Aug 2017
Inclusion in quiz mode: Included