Dyke-Davidoff-Masson syndrome

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) 6

In some sources, it is equated to hemispheric infarction, whereas in other sources any cause of cerebral hemiatrophy is included.

  • seizures
  • facial asymmetry
  • contralateral hemiparesis
  • mental retardation 7

It was initially described by C G DykeL M Davidoff and C B Masson in 1933 5.

General imaging differential considerations include:

Share article

Article information

rID: 7280
Section: Syndromes
Synonyms or Alternate Spellings:
  • Dyke Davidoff Masson syndrome

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Drag
    Axial T2
    Drag here to reorder.
  • Drag
    Case 3
    Drag here to reorder.
  • Drag
    Case 4
    Drag here to reorder.
  • Drag
    Case 5
    Drag here to reorder.
  • Drag
    Case 6
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.