Sutural diastasis

Sutural diastasis is an abnormal widening of the skull sutures. It may be physiological in a neonate during a growth spurt. 

In non-traumatic scenarios accelerated growth of the sutural connective tissue without concurrent ossification is the underlying pathology. 

  • widening of the sutures may be appreciated on plain radiograph and is better still appreciated on CT
  • the following widths are considered to be diagnostic of sutural diastasis:
    • > 10 mm at brith
    • > 3mm at 2 years
    • > 2mm at 3 years
  • in case of trauma, it may be associated with or without fractures
  • in case of mass lesions or elevated intracranial pressure, secondary evidence of the same would be demonstrated
Share article

Article information

rID: 30438
System: Head & Neck
Section: Pathology
Tags: suture, cases
Synonyms or Alternate Spellings:
  • Diastatic fracture

Support Radiopaedia and see fewer ads

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.